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Finding the Fourth Proportional to 243,360, 335,844 and 135,934.56

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Solution

The fourth proportional to 243,360, 335,844 and 135,934.56 is: 187,593.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,360 : 335,844 = 135,934.56 : x
  2. Step 2: Convert to fraction form
    243,360/335,844 = 135,934.56/x
  3. Step 3: Cross multiply
    243,360x = 335,844 × 135,934.56
  4. Step 4: Simplify right side
    243,360x = 45,652,806,368.64
  5. Step 5: Solve for x
    x = 45,652,806,368.64/243,360
  6. Step 6: Final answer
    x = 187,593.71

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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.