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Finding the Fourth Proportional to 485,522.75, 728,284.13 and 153,098.75

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Solution

The fourth proportional to 485,522.75, 728,284.13 and 153,098.75 is: 229,648.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,522.75 : 728,284.13 = 153,098.75 : x
  2. Step 2: Convert to fraction form
    485,522.75/728,284.13 = 153,098.75/x
  3. Step 3: Cross multiply
    485,522.75x = 728,284.13 × 153,098.75
  4. Step 4: Simplify right side
    485,522.75x = 111,499,389,947.84
  5. Step 5: Solve for x
    x = 111,499,389,947.84/485,522.75
  6. Step 6: Final answer
    x = 229,648.13

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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.