Home / 318,885,209.40-440,061,586.38-172,207,480.44

Finding the Fourth Proportional to 318,885,209.40, 440,061,586.38 and 172,207,480.44

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Solution

The fourth proportional to 318,885,209.40, 440,061,586.38 and 172,207,480.44 is: 237,646,321.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,885,209.40 : 440,061,586.38 = 172,207,480.44 : x
  2. Step 2: Convert to fraction form
    318,885,209.40/440,061,586.38 = 172,207,480.44/x
  3. Step 3: Cross multiply
    318,885,209.40x = 440,061,586.38 × 172,207,480.44
  4. Step 4: Simplify right side
    318,885,209.40x = 75,781,897,028,929,216
  5. Step 5: Solve for x
    x = 75,781,897,028,929,216/318,885,209.40
  6. Step 6: Final answer
    x = 237,646,321.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.