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Finding the Fourth Proportional to 485,520.50, 728,280.75 and 153,096.50

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Solution

The fourth proportional to 485,520.50, 728,280.75 and 153,096.50 is: 229,644.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,520.50 : 728,280.75 = 153,096.50 : x
  2. Step 2: Convert to fraction form
    485,520.50/728,280.75 = 153,096.50/x
  3. Step 3: Cross multiply
    485,520.50x = 728,280.75 × 153,096.50
  4. Step 4: Simplify right side
    485,520.50x = 111,497,233,842.38
  5. Step 5: Solve for x
    x = 111,497,233,842.38/485,520.50
  6. Step 6: Final answer
    x = 229,644.75

Related Problems

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Half scale
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Double scale
Find fourth proportional to 485,521.50, 728,282.25 and 153,097.50
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.