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Finding the Fourth Proportional to 465,856.52, 698,798.42 and 128,899.90

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Solution

The fourth proportional to 465,856.52, 698,798.42 and 128,899.90 is: 193,353.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,856.52 : 698,798.42 = 128,899.90 : x
  2. Step 2: Convert to fraction form
    465,856.52/698,798.42 = 128,899.90/x
  3. Step 3: Cross multiply
    465,856.52x = 698,798.42 × 128,899.90
  4. Step 4: Simplify right side
    465,856.52x = 90,075,046,458.16
  5. Step 5: Solve for x
    x = 90,075,046,458.16/465,856.52
  6. Step 6: Final answer
    x = 193,353.62

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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.