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Finding the Fourth Proportional to 235,790.80, 353,686.20 and 161,141.20

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Solution

The fourth proportional to 235,790.80, 353,686.20 and 161,141.20 is: 241,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,790.80 : 353,686.20 = 161,141.20 : x
  2. Step 2: Convert to fraction form
    235,790.80/353,686.20 = 161,141.20/x
  3. Step 3: Cross multiply
    235,790.80x = 353,686.20 × 161,141.20
  4. Step 4: Simplify right side
    235,790.80x = 56,993,418,691.44
  5. Step 5: Solve for x
    x = 56,993,418,691.44/235,790.80
  6. Step 6: Final answer
    x = 241,711.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.