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Finding the Fourth Proportional to 465,455.22, 698,168.88 and 128,516.43

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Solution

The fourth proportional to 465,455.22, 698,168.88 and 128,516.43 is: 192,770.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,455.22 : 698,168.88 = 128,516.43 : x
  2. Step 2: Convert to fraction form
    465,455.22/698,168.88 = 128,516.43/x
  3. Step 3: Cross multiply
    465,455.22x = 698,168.88 × 128,516.43
  4. Step 4: Simplify right side
    465,455.22x = 89,726,171,994.70
  5. Step 5: Solve for x
    x = 89,726,171,994.70/465,455.22
  6. Step 6: Final answer
    x = 192,770.79

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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.