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Finding the Fourth Proportional to 272,083.64, 408,124.86 and 72,404.04

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Solution

The fourth proportional to 272,083.64, 408,124.86 and 72,404.04 is: 108,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,083.64 : 408,124.86 = 72,404.04 : x
  2. Step 2: Convert to fraction form
    272,083.64/408,124.86 = 72,404.04/x
  3. Step 3: Cross multiply
    272,083.64x = 408,124.86 × 72,404.04
  4. Step 4: Simplify right side
    272,083.64x = 29,549,888,688.43
  5. Step 5: Solve for x
    x = 29,549,888,688.43/272,083.64
  6. Step 6: Final answer
    x = 108,605.90

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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.