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Finding the Fourth Proportional to 324,099.20, 486,148.80 and 305,728.40

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Solution

The fourth proportional to 324,099.20, 486,148.80 and 305,728.40 is: 458,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,099.20 : 486,148.80 = 305,728.40 : x
  2. Step 2: Convert to fraction form
    324,099.20/486,148.80 = 305,728.40/x
  3. Step 3: Cross multiply
    324,099.20x = 486,148.80 × 305,728.40
  4. Step 4: Simplify right side
    324,099.20x = 148,629,494,785.92
  5. Step 5: Solve for x
    x = 148,629,494,785.92/324,099.20
  6. Step 6: Final answer
    x = 458,592.60

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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.