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Finding the Fourth Proportional to 251,854.65, 347,565.65 and 137,139.58

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Solution

The fourth proportional to 251,854.65, 347,565.65 and 137,139.58 is: 189,256.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,854.65 : 347,565.65 = 137,139.58 : x
  2. Step 2: Convert to fraction form
    251,854.65/347,565.65 = 137,139.58/x
  3. Step 3: Cross multiply
    251,854.65x = 347,565.65 × 137,139.58
  4. Step 4: Simplify right side
    251,854.65x = 47,665,004,839.90
  5. Step 5: Solve for x
    x = 47,665,004,839.90/251,854.65
  6. Step 6: Final answer
    x = 189,256.00

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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.