Home / 488,268.40-731,965.20-319,869.40

Finding the Fourth Proportional to 488,268.40, 731,965.20 and 319,869.40

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Solution

The fourth proportional to 488,268.40, 731,965.20 and 319,869.40 is: 479,517.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,268.40 : 731,965.20 = 319,869.40 : x
  2. Step 2: Convert to fraction form
    488,268.40/731,965.20 = 319,869.40/x
  3. Step 3: Cross multiply
    488,268.40x = 731,965.20 × 319,869.40
  4. Step 4: Simplify right side
    488,268.40x = 234,133,269,344.88
  5. Step 5: Solve for x
    x = 234,133,269,344.88/488,268.40
  6. Step 6: Final answer
    x = 479,517.55

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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.