Home / 513,318.20-769,977.30-139,341.20

Finding the Fourth Proportional to 513,318.20, 769,977.30 and 139,341.20

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Solution

The fourth proportional to 513,318.20, 769,977.30 and 139,341.20 is: 209,011.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,318.20 : 769,977.30 = 139,341.20 : x
  2. Step 2: Convert to fraction form
    513,318.20/769,977.30 = 139,341.20/x
  3. Step 3: Cross multiply
    513,318.20x = 769,977.30 × 139,341.20
  4. Step 4: Simplify right side
    513,318.20x = 107,289,557,104.87
  5. Step 5: Solve for x
    x = 107,289,557,104.87/513,318.20
  6. Step 6: Final answer
    x = 209,011.79

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Similar ratio
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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.