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Finding the Fourth Proportional to 243,744.86, 336,372.53 and 136,326.71

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Solution

The fourth proportional to 243,744.86, 336,372.53 and 136,326.71 is: 188,133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,744.86 : 336,372.53 = 136,326.71 : x
  2. Step 2: Convert to fraction form
    243,744.86/336,372.53 = 136,326.71/x
  3. Step 3: Cross multiply
    243,744.86x = 336,372.53 × 136,326.71
  4. Step 4: Simplify right side
    243,744.86x = 45,856,560,349.28
  5. Step 5: Solve for x
    x = 45,856,560,349.28/243,744.86
  6. Step 6: Final answer
    x = 188,133.45

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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.