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Finding the Fourth Proportional to 243,470.86, 335,983.49 and 136,041.78

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Solution

The fourth proportional to 243,470.86, 335,983.49 and 136,041.78 is: 187,734.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,470.86 : 335,983.49 = 136,041.78 : x
  2. Step 2: Convert to fraction form
    243,470.86/335,983.49 = 136,041.78/x
  3. Step 3: Cross multiply
    243,470.86x = 335,983.49 × 136,041.78
  4. Step 4: Simplify right side
    243,470.86x = 45,707,790,600.22
  5. Step 5: Solve for x
    x = 45,707,790,600.22/243,470.86
  6. Step 6: Final answer
    x = 187,734.13

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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.