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Finding the Fourth Proportional to 247,761.86, 341,935.28 and 138,884.63

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Solution

The fourth proportional to 247,761.86, 341,935.28 and 138,884.63 is: 191,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,761.86 : 341,935.28 = 138,884.63 : x
  2. Step 2: Convert to fraction form
    247,761.86/341,935.28 = 138,884.63/x
  3. Step 3: Cross multiply
    247,761.86x = 341,935.28 × 138,884.63
  4. Step 4: Simplify right side
    247,761.86x = 47,489,552,442.65
  5. Step 5: Solve for x
    x = 47,489,552,442.65/247,761.86
  6. Step 6: Final answer
    x = 191,674.19

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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.