Home / 488,272.40-731,971.20-319,873.40

Finding the Fourth Proportional to 488,272.40, 731,971.20 and 319,873.40

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Solution

The fourth proportional to 488,272.40, 731,971.20 and 319,873.40 is: 479,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,272.40 : 731,971.20 = 319,873.40 : x
  2. Step 2: Convert to fraction form
    488,272.40/731,971.20 = 319,873.40/x
  3. Step 3: Cross multiply
    488,272.40x = 731,971.20 × 319,873.40
  4. Step 4: Simplify right side
    488,272.40x = 234,138,116,446.08
  5. Step 5: Solve for x
    x = 234,138,116,446.08/488,272.40
  6. Step 6: Final answer
    x = 479,523.55

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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.