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Finding the Fourth Proportional to 243,467.52, 335,978.89 and 136,038.43

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Solution

The fourth proportional to 243,467.52, 335,978.89 and 136,038.43 is: 187,729.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,467.52 : 335,978.89 = 136,038.43 : x
  2. Step 2: Convert to fraction form
    243,467.52/335,978.89 = 136,038.43/x
  3. Step 3: Cross multiply
    243,467.52x = 335,978.89 × 136,038.43
  4. Step 4: Simplify right side
    243,467.52x = 45,706,040,708.74
  5. Step 5: Solve for x
    x = 45,706,040,708.74/243,467.52
  6. Step 6: Final answer
    x = 187,729.52

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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.