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Finding the Fourth Proportional to 243,381.08, 335,865.20 and 135,951.32

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Solution

The fourth proportional to 243,381.08, 335,865.20 and 135,951.32 is: 187,612.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,381.08 : 335,865.20 = 135,951.32 : x
  2. Step 2: Convert to fraction form
    243,381.08/335,865.20 = 135,951.32/x
  3. Step 3: Cross multiply
    243,381.08x = 335,865.20 × 135,951.32
  4. Step 4: Simplify right side
    243,381.08x = 45,661,317,282.06
  5. Step 5: Solve for x
    x = 45,661,317,282.06/243,381.08
  6. Step 6: Final answer
    x = 187,612.44

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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.