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Finding the Fourth Proportional to 399,588.77, 551,443.33 and 238,537.29

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Solution

The fourth proportional to 399,588.77, 551,443.33 and 238,537.29 is: 329,187.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,588.77 : 551,443.33 = 238,537.29 : x
  2. Step 2: Convert to fraction form
    399,588.77/551,443.33 = 238,537.29/x
  3. Step 3: Cross multiply
    399,588.77x = 551,443.33 × 238,537.29
  4. Step 4: Simplify right side
    399,588.77x = 131,539,797,526.78
  5. Step 5: Solve for x
    x = 131,539,797,526.78/399,588.77
  6. Step 6: Final answer
    x = 329,187.92

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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.