Home / 257,768.18-386,711.31-80,265.14

Finding the Fourth Proportional to 257,768.18, 386,711.31 and 80,265.14

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Solution

The fourth proportional to 257,768.18, 386,711.31 and 80,265.14 is: 120,416.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,768.18 : 386,711.31 = 80,265.14 : x
  2. Step 2: Convert to fraction form
    257,768.18/386,711.31 = 80,265.14/x
  3. Step 3: Cross multiply
    257,768.18x = 386,711.31 × 80,265.14
  4. Step 4: Simplify right side
    257,768.18x = 31,039,437,436.73
  5. Step 5: Solve for x
    x = 31,039,437,436.73/257,768.18
  6. Step 6: Final answer
    x = 120,416.09

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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.