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Finding the Fourth Proportional to 243,364.92, 335,810.19 and 135,921.24

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Solution

The fourth proportional to 243,364.92, 335,810.19 and 135,921.24 is: 187,552.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,364.92 : 335,810.19 = 135,921.24 : x
  2. Step 2: Convert to fraction form
    243,364.92/335,810.19 = 135,921.24/x
  3. Step 3: Cross multiply
    243,364.92x = 335,810.19 × 135,921.24
  4. Step 4: Simplify right side
    243,364.92x = 45,643,737,429.44
  5. Step 5: Solve for x
    x = 45,643,737,429.44/243,364.92
  6. Step 6: Final answer
    x = 187,552.66

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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.