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Finding the Fourth Proportional to 398,217.80, 597,319.02 and 98,699

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Solution

The fourth proportional to 398,217.80, 597,319.02 and 98,699 is: 148,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,217.80 : 597,319.02 = 98,699 : x
  2. Step 2: Convert to fraction form
    398,217.80/597,319.02 = 98,699/x
  3. Step 3: Cross multiply
    398,217.80x = 597,319.02 × 98,699
  4. Step 4: Simplify right side
    398,217.80x = 58,954,789,954.98
  5. Step 5: Solve for x
    x = 58,954,789,954.98/398,217.80
  6. Step 6: Final answer
    x = 148,046.60

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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.