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Finding the Fourth Proportional to 399,559.84, 551,403.40 and 238,508.32

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Solution

The fourth proportional to 399,559.84, 551,403.40 and 238,508.32 is: 329,147.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,559.84 : 551,403.40 = 238,508.32 : x
  2. Step 2: Convert to fraction form
    399,559.84/551,403.40 = 238,508.32/x
  3. Step 3: Cross multiply
    399,559.84x = 551,403.40 × 238,508.32
  4. Step 4: Simplify right side
    399,559.84x = 131,514,298,576.29
  5. Step 5: Solve for x
    x = 131,514,298,576.29/399,559.84
  6. Step 6: Final answer
    x = 329,147.94

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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.