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Finding the Fourth Proportional to 399,311.72, 550,851.24 and 238,053.14

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Solution

The fourth proportional to 399,311.72, 550,851.24 and 238,053.14 is: 328,394.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,311.72 : 550,851.24 = 238,053.14 : x
  2. Step 2: Convert to fraction form
    399,311.72/550,851.24 = 238,053.14/x
  3. Step 3: Cross multiply
    399,311.72x = 550,851.24 × 238,053.14
  4. Step 4: Simplify right side
    399,311.72x = 131,131,867,354.89
  5. Step 5: Solve for x
    x = 131,131,867,354.89/399,311.72
  6. Step 6: Final answer
    x = 328,394.74

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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.