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Finding the Fourth Proportional to 243,509.95, 336,042.74 and 136,079.96

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Solution

The fourth proportional to 243,509.95, 336,042.74 and 136,079.96 is: 187,789.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,509.95 : 336,042.74 = 136,079.96 : x
  2. Step 2: Convert to fraction form
    243,509.95/336,042.74 = 136,079.96/x
  3. Step 3: Cross multiply
    243,509.95x = 336,042.74 × 136,079.96
  4. Step 4: Simplify right side
    243,509.95x = 45,728,680,937.28
  5. Step 5: Solve for x
    x = 45,728,680,937.28/243,509.95
  6. Step 6: Final answer
    x = 187,789.79

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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.