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Finding the Fourth Proportional to 485,518.50, 728,277.75 and 153,094.50

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Solution

The fourth proportional to 485,518.50, 728,277.75 and 153,094.50 is: 229,641.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,518.50 : 728,277.75 = 153,094.50 : x
  2. Step 2: Convert to fraction form
    485,518.50/728,277.75 = 153,094.50/x
  3. Step 3: Cross multiply
    485,518.50x = 728,277.75 × 153,094.50
  4. Step 4: Simplify right side
    485,518.50x = 111,495,317,997.38
  5. Step 5: Solve for x
    x = 111,495,317,997.38/485,518.50
  6. Step 6: Final answer
    x = 229,641.75

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Double scale
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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.