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Finding the Fourth Proportional to 243,488.43, 336,013.32 and 136,058.57

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Solution

The fourth proportional to 243,488.43, 336,013.32 and 136,058.57 is: 187,760.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,488.43 : 336,013.32 = 136,058.57 : x
  2. Step 2: Convert to fraction form
    243,488.43/336,013.32 = 136,058.57/x
  3. Step 3: Cross multiply
    243,488.43x = 336,013.32 × 136,058.57
  4. Step 4: Simplify right side
    243,488.43x = 45,717,491,820.15
  5. Step 5: Solve for x
    x = 45,717,491,820.15/243,488.43
  6. Step 6: Final answer
    x = 187,760.43

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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.