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Finding the Fourth Proportional to 399,585.52, 551,438.84 and 238,534.04

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Solution

The fourth proportional to 399,585.52, 551,438.84 and 238,534.04 is: 329,183.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,585.52 : 551,438.84 = 238,534.04 : x
  2. Step 2: Convert to fraction form
    399,585.52/551,438.84 = 238,534.04/x
  3. Step 3: Cross multiply
    399,585.52x = 551,438.84 × 238,534.04
  4. Step 4: Simplify right side
    399,585.52x = 131,536,933,400.37
  5. Step 5: Solve for x
    x = 131,536,933,400.37/399,585.52
  6. Step 6: Final answer
    x = 329,183.44

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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.