Home / 426,218.83-638,819.84-198,206.66

Finding the Fourth Proportional to 426,218.83, 638,819.84 and 198,206.66

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Solution

The fourth proportional to 426,218.83, 638,819.84 and 198,206.66 is: 297,073.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,218.83 : 638,819.84 = 198,206.66 : x
  2. Step 2: Convert to fraction form
    426,218.83/638,819.84 = 198,206.66/x
  3. Step 3: Cross multiply
    426,218.83x = 638,819.84 × 198,206.66
  4. Step 4: Simplify right side
    426,218.83x = 126,618,344,344.02
  5. Step 5: Solve for x
    x = 126,618,344,344.02/426,218.83
  6. Step 6: Final answer
    x = 297,073.56

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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.