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Finding the Fourth Proportional to 225,505,689.60, 338,258,534.40 and 72,156,748.80

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Solution

The fourth proportional to 225,505,689.60, 338,258,534.40 and 72,156,748.80 is: 108,235,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,505,689.60 : 338,258,534.40 = 72,156,748.80 : x
  2. Step 2: Convert to fraction form
    225,505,689.60/338,258,534.40 = 72,156,748.80/x
  3. Step 3: Cross multiply
    225,505,689.60x = 338,258,534.40 × 72,156,748.80
  4. Step 4: Simplify right side
    225,505,689.60x = 24,407,636,096,156,956
  5. Step 5: Solve for x
    x = 24,407,636,096,156,956/225,505,689.60
  6. Step 6: Final answer
    x = 108,235,123.20

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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.