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Finding the Fourth Proportional to 243,361.80, 335,835.72 and 135,933.30

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Solution

The fourth proportional to 243,361.80, 335,835.72 and 135,933.30 is: 187,585.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,361.80 : 335,835.72 = 135,933.30 : x
  2. Step 2: Convert to fraction form
    243,361.80/335,835.72 = 135,933.30/x
  3. Step 3: Cross multiply
    243,361.80x = 335,835.72 × 135,933.30
  4. Step 4: Simplify right side
    243,361.80x = 45,651,257,677.48
  5. Step 5: Solve for x
    x = 45,651,257,677.48/243,361.80
  6. Step 6: Final answer
    x = 187,585.96

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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.