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Finding the Fourth Proportional to 246,151.88, 339,684.89 and 138,719.76

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Solution

The fourth proportional to 246,151.88, 339,684.89 and 138,719.76 is: 191,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,151.88 : 339,684.89 = 138,719.76 : x
  2. Step 2: Convert to fraction form
    246,151.88/339,684.89 = 138,719.76/x
  3. Step 3: Cross multiply
    246,151.88x = 339,684.89 × 138,719.76
  4. Step 4: Simplify right side
    246,151.88x = 47,121,005,229.31
  5. Step 5: Solve for x
    x = 47,121,005,229.31/246,151.88
  6. Step 6: Final answer
    x = 191,430.61

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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.