Home / 521,184.87-781,580.48-221,806.44

Finding the Fourth Proportional to 521,184.87, 781,580.48 and 221,806.44

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Solution

The fourth proportional to 521,184.87, 781,580.48 and 221,806.44 is: 332,625.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,184.87 : 781,580.48 = 221,806.44 : x
  2. Step 2: Convert to fraction form
    521,184.87/781,580.48 = 221,806.44/x
  3. Step 3: Cross multiply
    521,184.87x = 781,580.48 × 221,806.44
  4. Step 4: Simplify right side
    521,184.87x = 173,359,582,733.26
  5. Step 5: Solve for x
    x = 173,359,582,733.26/521,184.87
  6. Step 6: Final answer
    x = 332,625.89

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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.