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Finding the Fourth Proportional to 243,032.91, 335,385.68 and 135,609.90

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Solution

The fourth proportional to 243,032.91, 335,385.68 and 135,609.90 is: 187,141.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,032.91 : 335,385.68 = 135,609.90 : x
  2. Step 2: Convert to fraction form
    243,032.91/335,385.68 = 135,609.90/x
  3. Step 3: Cross multiply
    243,032.91x = 335,385.68 × 135,609.90
  4. Step 4: Simplify right side
    243,032.91x = 45,481,617,848.18
  5. Step 5: Solve for x
    x = 45,481,617,848.18/243,032.91
  6. Step 6: Final answer
    x = 187,141.81

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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.