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Finding the Fourth Proportional to 243,341.38, 335,807.58 and 135,912.97

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Solution

The fourth proportional to 243,341.38, 335,807.58 and 135,912.97 is: 187,557.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,341.38 : 335,807.58 = 135,912.97 : x
  2. Step 2: Convert to fraction form
    243,341.38/335,807.58 = 135,912.97/x
  3. Step 3: Cross multiply
    243,341.38x = 335,807.58 × 135,912.97
  4. Step 4: Simplify right side
    243,341.38x = 45,640,605,546.31
  5. Step 5: Solve for x
    x = 45,640,605,546.31/243,341.38
  6. Step 6: Final answer
    x = 187,557.93

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1.5x scale

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.