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Finding the Fourth Proportional to 453,553.20, 680,038.20 and 187,419.60

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Solution

The fourth proportional to 453,553.20, 680,038.20 and 187,419.60 is: 281,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,553.20 : 680,038.20 = 187,419.60 : x
  2. Step 2: Convert to fraction form
    453,553.20/680,038.20 = 187,419.60/x
  3. Step 3: Cross multiply
    453,553.20x = 680,038.20 × 187,419.60
  4. Step 4: Simplify right side
    453,553.20x = 127,452,487,428.72
  5. Step 5: Solve for x
    x = 127,452,487,428.72/453,553.20
  6. Step 6: Final answer
    x = 281,008.90

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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.