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Finding the Fourth Proportional to 399,737.09, 551,460.00 and 238,498.39

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Solution

The fourth proportional to 399,737.09, 551,460.00 and 238,498.39 is: 329,022.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,737.09 : 551,460.00 = 238,498.39 : x
  2. Step 2: Convert to fraction form
    399,737.09/551,460.00 = 238,498.39/x
  3. Step 3: Cross multiply
    399,737.09x = 551,460.00 × 238,498.39
  4. Step 4: Simplify right side
    399,737.09x = 131,522,322,391.54
  5. Step 5: Solve for x
    x = 131,522,322,391.54/399,737.09
  6. Step 6: Final answer
    x = 329,022.06

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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.