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Finding the Fourth Proportional to 243,168.39, 335,572.61 and 135,738.27

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Solution

The fourth proportional to 243,168.39, 335,572.61 and 135,738.27 is: 187,318.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,168.39 : 335,572.61 = 135,738.27 : x
  2. Step 2: Convert to fraction form
    243,168.39/335,572.61 = 135,738.27/x
  3. Step 3: Cross multiply
    243,168.39x = 335,572.61 × 135,738.27
  4. Step 4: Simplify right side
    243,168.39x = 45,550,044,862.09
  5. Step 5: Solve for x
    x = 45,550,044,862.09/243,168.39
  6. Step 6: Final answer
    x = 187,318.94

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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.