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Finding the Fourth Proportional to 245,926.92, 339,375.54 and 138,497.16

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Solution

The fourth proportional to 245,926.92, 339,375.54 and 138,497.16 is: 191,124.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,926.92 : 339,375.54 = 138,497.16 : x
  2. Step 2: Convert to fraction form
    245,926.92/339,375.54 = 138,497.16/x
  3. Step 3: Cross multiply
    245,926.92x = 339,375.54 × 138,497.16
  4. Step 4: Simplify right side
    245,926.92x = 47,002,548,463.47
  5. Step 5: Solve for x
    x = 47,002,548,463.47/245,926.92
  6. Step 6: Final answer
    x = 191,124.05

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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.