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Finding the Fourth Proportional to 400,367.62, 552,490.81 and 239,311.47

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Solution

The fourth proportional to 400,367.62, 552,490.81 and 239,311.47 is: 330,239.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,367.62 : 552,490.81 = 239,311.47 : x
  2. Step 2: Convert to fraction form
    400,367.62/552,490.81 = 239,311.47/x
  3. Step 3: Cross multiply
    400,367.62x = 552,490.81 × 239,311.47
  4. Step 4: Simplify right side
    400,367.62x = 132,217,387,902.59
  5. Step 5: Solve for x
    x = 132,217,387,902.59/400,367.62
  6. Step 6: Final answer
    x = 330,239.96

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1.5x scale

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.