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Finding the Fourth Proportional to 243,509.82, 336,042.57 and 136,079.83

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Solution

The fourth proportional to 243,509.82, 336,042.57 and 136,079.83 is: 187,789.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,509.82 : 336,042.57 = 136,079.83 : x
  2. Step 2: Convert to fraction form
    243,509.82/336,042.57 = 136,079.83/x
  3. Step 3: Cross multiply
    243,509.82x = 336,042.57 × 136,079.83
  4. Step 4: Simplify right side
    243,509.82x = 45,728,614,838.48
  5. Step 5: Solve for x
    x = 45,728,614,838.48/243,509.82
  6. Step 6: Final answer
    x = 187,789.61

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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.