Home / 257,139.80-385,771.28-107,296.73

Finding the Fourth Proportional to 257,139.80, 385,771.28 and 107,296.73

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Solution

The fourth proportional to 257,139.80, 385,771.28 and 107,296.73 is: 160,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,139.80 : 385,771.28 = 107,296.73 : x
  2. Step 2: Convert to fraction form
    257,139.80/385,771.28 = 107,296.73/x
  3. Step 3: Cross multiply
    257,139.80x = 385,771.28 × 107,296.73
  4. Step 4: Simplify right side
    257,139.80x = 41,391,995,853.22
  5. Step 5: Solve for x
    x = 41,391,995,853.22/257,139.80
  6. Step 6: Final answer
    x = 160,970.79

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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.