Home / 204,859.20-307,288.80-57,115.20

Finding the Fourth Proportional to 204,859.20, 307,288.80 and 57,115.20

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Solution

The fourth proportional to 204,859.20, 307,288.80 and 57,115.20 is: 85,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,859.20 : 307,288.80 = 57,115.20 : x
  2. Step 2: Convert to fraction form
    204,859.20/307,288.80 = 57,115.20/x
  3. Step 3: Cross multiply
    204,859.20x = 307,288.80 × 57,115.20
  4. Step 4: Simplify right side
    204,859.20x = 17,550,861,269.76
  5. Step 5: Solve for x
    x = 17,550,861,269.76/204,859.20
  6. Step 6: Final answer
    x = 85,672.80

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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.