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Finding the Fourth Proportional to 272,568.71, 408,824.31 and 72,909.25

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Solution

The fourth proportional to 272,568.71, 408,824.31 and 72,909.25 is: 109,356.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,568.71 : 408,824.31 = 72,909.25 : x
  2. Step 2: Convert to fraction form
    272,568.71/408,824.31 = 72,909.25/x
  3. Step 3: Cross multiply
    272,568.71x = 408,824.31 × 72,909.25
  4. Step 4: Simplify right side
    272,568.71x = 29,807,071,779.75
  5. Step 5: Solve for x
    x = 29,807,071,779.75/272,568.71
  6. Step 6: Final answer
    x = 109,356.18

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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.