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Finding the Fourth Proportional to 465,432.18, 698,188.32 and 128,472.88

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Solution

The fourth proportional to 465,432.18, 698,188.32 and 128,472.88 is: 192,720.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,432.18 : 698,188.32 = 128,472.88 : x
  2. Step 2: Convert to fraction form
    465,432.18/698,188.32 = 128,472.88/x
  3. Step 3: Cross multiply
    465,432.18x = 698,188.32 × 128,472.88
  4. Step 4: Simplify right side
    465,432.18x = 89,698,264,252.76
  5. Step 5: Solve for x
    x = 89,698,264,252.76/465,432.18
  6. Step 6: Final answer
    x = 192,720.37

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1.5x scale

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.