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Finding the Fourth Proportional to 465,435.04, 698,192.64 and 128,475.76

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Solution

The fourth proportional to 465,435.04, 698,192.64 and 128,475.76 is: 192,724.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,435.04 : 698,192.64 = 128,475.76 : x
  2. Step 2: Convert to fraction form
    465,435.04/698,192.64 = 128,475.76/x
  3. Step 3: Cross multiply
    465,435.04x = 698,192.64 × 128,475.76
  4. Step 4: Simplify right side
    465,435.04x = 89,700,830,050.41
  5. Step 5: Solve for x
    x = 89,700,830,050.41/465,435.04
  6. Step 6: Final answer
    x = 192,724.70

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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.