Home / 513,213.83-769,821.15-139,236.83

Finding the Fourth Proportional to 513,213.83, 769,821.15 and 139,236.83

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Solution

The fourth proportional to 513,213.83, 769,821.15 and 139,236.83 is: 208,855.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,213.83 : 769,821.15 = 139,236.83 : x
  2. Step 2: Convert to fraction form
    513,213.83/769,821.15 = 139,236.83/x
  3. Step 3: Cross multiply
    513,213.83x = 769,821.15 × 139,236.83
  4. Step 4: Simplify right side
    513,213.83x = 107,187,456,592.96
  5. Step 5: Solve for x
    x = 107,187,456,592.96/513,213.83
  6. Step 6: Final answer
    x = 208,855.35

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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.