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Finding the Fourth Proportional to 272,569.71, 408,825.81 and 72,910.25

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Solution

The fourth proportional to 272,569.71, 408,825.81 and 72,910.25 is: 109,357.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,569.71 : 408,825.81 = 72,910.25 : x
  2. Step 2: Convert to fraction form
    272,569.71/408,825.81 = 72,910.25/x
  3. Step 3: Cross multiply
    272,569.71x = 408,825.81 × 72,910.25
  4. Step 4: Simplify right side
    272,569.71x = 29,807,589,969.42
  5. Step 5: Solve for x
    x = 29,807,589,969.42/272,569.71
  6. Step 6: Final answer
    x = 109,357.68

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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.