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Finding the Fourth Proportional to 399,414.20, 599,261.24 and 249,478.95

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Solution

The fourth proportional to 399,414.20, 599,261.24 and 249,478.95 is: 374,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,414.20 : 599,261.24 = 249,478.95 : x
  2. Step 2: Convert to fraction form
    399,414.20/599,261.24 = 249,478.95/x
  3. Step 3: Cross multiply
    399,414.20x = 599,261.24 × 249,478.95
  4. Step 4: Simplify right side
    399,414.20x = 149,503,063,870.37
  5. Step 5: Solve for x
    x = 149,503,063,870.37/399,414.20
  6. Step 6: Final answer
    x = 374,305.83

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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.