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Finding the Fourth Proportional to 251,866.68, 347,575.32 and 138,689.52

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Solution

The fourth proportional to 251,866.68, 347,575.32 and 138,689.52 is: 191,391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,866.68 : 347,575.32 = 138,689.52 : x
  2. Step 2: Convert to fraction form
    251,866.68/347,575.32 = 138,689.52/x
  3. Step 3: Cross multiply
    251,866.68x = 347,575.32 × 138,689.52
  4. Step 4: Simplify right side
    251,866.68x = 48,205,054,294.65
  5. Step 5: Solve for x
    x = 48,205,054,294.65/251,866.68
  6. Step 6: Final answer
    x = 191,391.15

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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.