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Finding the Fourth Proportional to 398,549.70, 597,694.48 and 132,238.71

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Solution

The fourth proportional to 398,549.70, 597,694.48 and 132,238.71 is: 198,314.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,549.70 : 597,694.48 = 132,238.71 : x
  2. Step 2: Convert to fraction form
    398,549.70/597,694.48 = 132,238.71/x
  3. Step 3: Cross multiply
    398,549.70x = 597,694.48 × 132,238.71
  4. Step 4: Simplify right side
    398,549.70x = 79,038,346,678.72
  5. Step 5: Solve for x
    x = 79,038,346,678.72/398,549.70
  6. Step 6: Final answer
    x = 198,314.91

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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.