Home / 399,739.62-551,463.49-238,500.92

Finding the Fourth Proportional to 399,739.62, 551,463.49 and 238,500.92

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Solution

The fourth proportional to 399,739.62, 551,463.49 and 238,500.92 is: 329,025.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,739.62 : 551,463.49 = 238,500.92 : x
  2. Step 2: Convert to fraction form
    399,739.62/551,463.49 = 238,500.92/x
  3. Step 3: Cross multiply
    399,739.62x = 551,463.49 × 238,500.92
  4. Step 4: Simplify right side
    399,739.62x = 131,524,551,388.20
  5. Step 5: Solve for x
    x = 131,524,551,388.20/399,739.62
  6. Step 6: Final answer
    x = 329,025.55

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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.