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Finding the Fourth Proportional to 318,297.60, 477,446.40 and 149,713.12

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Solution

The fourth proportional to 318,297.60, 477,446.40 and 149,713.12 is: 224,569.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,297.60 : 477,446.40 = 149,713.12 : x
  2. Step 2: Convert to fraction form
    318,297.60/477,446.40 = 149,713.12/x
  3. Step 3: Cross multiply
    318,297.60x = 477,446.40 × 149,713.12
  4. Step 4: Simplify right side
    318,297.60x = 71,479,990,176.77
  5. Step 5: Solve for x
    x = 71,479,990,176.77/318,297.60
  6. Step 6: Final answer
    x = 224,569.68

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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.