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Finding the Fourth Proportional to 272,366.35, 408,549.53 and 72,687.45

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Solution

The fourth proportional to 272,366.35, 408,549.53 and 72,687.45 is: 109,031.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,366.35 : 408,549.53 = 72,687.45 : x
  2. Step 2: Convert to fraction form
    272,366.35/408,549.53 = 72,687.45/x
  3. Step 3: Cross multiply
    272,366.35x = 408,549.53 × 72,687.45
  4. Step 4: Simplify right side
    272,366.35x = 29,696,423,534.40
  5. Step 5: Solve for x
    x = 29,696,423,534.40/272,366.35
  6. Step 6: Final answer
    x = 109,031.18

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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.