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Finding the Fourth Proportional to 324,099.80, 486,149.70 and 87,466.40

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Solution

The fourth proportional to 324,099.80, 486,149.70 and 87,466.40 is: 131,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,099.80 : 486,149.70 = 87,466.40 : x
  2. Step 2: Convert to fraction form
    324,099.80/486,149.70 = 87,466.40/x
  3. Step 3: Cross multiply
    324,099.80x = 486,149.70 × 87,466.40
  4. Step 4: Simplify right side
    324,099.80x = 42,521,764,120.08
  5. Step 5: Solve for x
    x = 42,521,764,120.08/324,099.80
  6. Step 6: Final answer
    x = 131,199.60

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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.