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Finding the Fourth Proportional to 398,781.69, 550,299.32 and 237,633.15

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Solution

The fourth proportional to 398,781.69, 550,299.32 and 237,633.15 is: 327,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,781.69 : 550,299.32 = 237,633.15 : x
  2. Step 2: Convert to fraction form
    398,781.69/550,299.32 = 237,633.15/x
  3. Step 3: Cross multiply
    398,781.69x = 550,299.32 × 237,633.15
  4. Step 4: Simplify right side
    398,781.69x = 130,769,359,666.29
  5. Step 5: Solve for x
    x = 130,769,359,666.29/398,781.69
  6. Step 6: Final answer
    x = 327,922.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.