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Finding the Fourth Proportional to 465,447.72, 698,157.62 and 128,508.94

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Solution

The fourth proportional to 465,447.72, 698,157.62 and 128,508.94 is: 192,759.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,447.72 : 698,157.62 = 128,508.94 : x
  2. Step 2: Convert to fraction form
    465,447.72/698,157.62 = 128,508.94/x
  3. Step 3: Cross multiply
    465,447.72x = 698,157.62 × 128,508.94
  4. Step 4: Simplify right side
    465,447.72x = 89,719,495,699.12
  5. Step 5: Solve for x
    x = 89,719,495,699.12/465,447.72
  6. Step 6: Final answer
    x = 192,759.56

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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.