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Finding the Fourth Proportional to 251,950.63, 347,691.81 and 138,773.38

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Solution

The fourth proportional to 251,950.63, 347,691.81 and 138,773.38 is: 191,507.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,950.63 : 347,691.81 = 138,773.38 : x
  2. Step 2: Convert to fraction form
    251,950.63/347,691.81 = 138,773.38/x
  3. Step 3: Cross multiply
    251,950.63x = 347,691.81 × 138,773.38
  4. Step 4: Simplify right side
    251,950.63x = 48,250,367,672.02
  5. Step 5: Solve for x
    x = 48,250,367,672.02/251,950.63
  6. Step 6: Final answer
    x = 191,507.23

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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.