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Finding the Fourth Proportional to 486,437.85, 729,659.21 and 219,886.29

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Solution

The fourth proportional to 486,437.85, 729,659.21 and 219,886.29 is: 329,830.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,437.85 : 729,659.21 = 219,886.29 : x
  2. Step 2: Convert to fraction form
    486,437.85/729,659.21 = 219,886.29/x
  3. Step 3: Cross multiply
    486,437.85x = 729,659.21 × 219,886.29
  4. Step 4: Simplify right side
    486,437.85x = 160,442,055,551.80
  5. Step 5: Solve for x
    x = 160,442,055,551.80/486,437.85
  6. Step 6: Final answer
    x = 329,830.53

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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.