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Finding the Fourth Proportional to 272,253.30, 408,399.40 and 72,572.64

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Solution

The fourth proportional to 272,253.30, 408,399.40 and 72,572.64 is: 108,864.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,253.30 : 408,399.40 = 72,572.64 : x
  2. Step 2: Convert to fraction form
    272,253.30/408,399.40 = 72,572.64/x
  3. Step 3: Cross multiply
    272,253.30x = 408,399.40 × 72,572.64
  4. Step 4: Simplify right side
    272,253.30x = 29,638,622,632.42
  5. Step 5: Solve for x
    x = 29,638,622,632.42/272,253.30
  6. Step 6: Final answer
    x = 108,864.14

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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.