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Finding the Fourth Proportional to 243,336.88, 335,801.39 and 135,908.47

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Solution

The fourth proportional to 243,336.88, 335,801.39 and 135,908.47 is: 187,551.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,336.88 : 335,801.39 = 135,908.47 : x
  2. Step 2: Convert to fraction form
    243,336.88/335,801.39 = 135,908.47/x
  3. Step 3: Cross multiply
    243,336.88x = 335,801.39 × 135,908.47
  4. Step 4: Simplify right side
    243,336.88x = 45,638,253,138.77
  5. Step 5: Solve for x
    x = 45,638,253,138.77/243,336.88
  6. Step 6: Final answer
    x = 187,551.73

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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.