Home / 320,811.60-481,217.40-291,287.10

Finding the Fourth Proportional to 320,811.60, 481,217.40 and 291,287.10

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Solution

The fourth proportional to 320,811.60, 481,217.40 and 291,287.10 is: 436,930.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,811.60 : 481,217.40 = 291,287.10 : x
  2. Step 2: Convert to fraction form
    320,811.60/481,217.40 = 291,287.10/x
  3. Step 3: Cross multiply
    320,811.60x = 481,217.40 × 291,287.10
  4. Step 4: Simplify right side
    320,811.60x = 140,172,420,915.54
  5. Step 5: Solve for x
    x = 140,172,420,915.54/320,811.60
  6. Step 6: Final answer
    x = 436,930.65

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Similar ratio
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1.5x scale

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.