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Finding the Fourth Proportional to 435,420.93, 653,155.71 and 135,942.87

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Solution

The fourth proportional to 435,420.93, 653,155.71 and 135,942.87 is: 203,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,420.93 : 653,155.71 = 135,942.87 : x
  2. Step 2: Convert to fraction form
    435,420.93/653,155.71 = 135,942.87/x
  3. Step 3: Cross multiply
    435,420.93x = 653,155.71 × 135,942.87
  4. Step 4: Simplify right side
    435,420.93x = 88,791,861,774.29
  5. Step 5: Solve for x
    x = 88,791,861,774.29/435,420.93
  6. Step 6: Final answer
    x = 203,921.90

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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.