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Finding the Fourth Proportional to 243,386.48, 335,863.32 and 135,956

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Solution

The fourth proportional to 243,386.48, 335,863.32 and 135,956 is: 187,613.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,386.48 : 335,863.32 = 135,956 : x
  2. Step 2: Convert to fraction form
    243,386.48/335,863.32 = 135,956/x
  3. Step 3: Cross multiply
    243,386.48x = 335,863.32 × 135,956
  4. Step 4: Simplify right side
    243,386.48x = 45,662,633,533.92
  5. Step 5: Solve for x
    x = 45,662,633,533.92/243,386.48
  6. Step 6: Final answer
    x = 187,613.68

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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.