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Finding the Fourth Proportional to 320,401.80, 480,645.90 and 110,104.20

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Solution

The fourth proportional to 320,401.80, 480,645.90 and 110,104.20 is: 165,171.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,401.80 : 480,645.90 = 110,104.20 : x
  2. Step 2: Convert to fraction form
    320,401.80/480,645.90 = 110,104.20/x
  3. Step 3: Cross multiply
    320,401.80x = 480,645.90 × 110,104.20
  4. Step 4: Simplify right side
    320,401.80x = 52,921,132,302.78
  5. Step 5: Solve for x
    x = 52,921,132,302.78/320,401.80
  6. Step 6: Final answer
    x = 165,171.15

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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.