Home / 257,789.60-386,226.88-107,699.57

Finding the Fourth Proportional to 257,789.60, 386,226.88 and 107,699.57

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Solution

The fourth proportional to 257,789.60, 386,226.88 and 107,699.57 is: 161,358.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,789.60 : 386,226.88 = 107,699.57 : x
  2. Step 2: Convert to fraction form
    257,789.60/386,226.88 = 107,699.57/x
  3. Step 3: Cross multiply
    257,789.60x = 386,226.88 × 107,699.57
  4. Step 4: Simplify right side
    257,789.60x = 41,596,466,698.06
  5. Step 5: Solve for x
    x = 41,596,466,698.06/257,789.60
  6. Step 6: Final answer
    x = 161,358.21

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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.