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Finding the Fourth Proportional to 465,543.22, 698,187.39 and 128,503.30

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Solution

The fourth proportional to 465,543.22, 698,187.39 and 128,503.30 is: 192,719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,543.22 : 698,187.39 = 128,503.30 : x
  2. Step 2: Convert to fraction form
    465,543.22/698,187.39 = 128,503.30/x
  3. Step 3: Cross multiply
    465,543.22x = 698,187.39 × 128,503.30
  4. Step 4: Simplify right side
    465,543.22x = 89,719,381,566.66
  5. Step 5: Solve for x
    x = 89,719,381,566.66/465,543.22
  6. Step 6: Final answer
    x = 192,719.77

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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.