Home / 372,217.20-559,708.20-311,391.60

Finding the Fourth Proportional to 372,217.20, 559,708.20 and 311,391.60

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Solution

The fourth proportional to 372,217.20, 559,708.20 and 311,391.60 is: 468,243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,217.20 : 559,708.20 = 311,391.60 : x
  2. Step 2: Convert to fraction form
    372,217.20/559,708.20 = 311,391.60/x
  3. Step 3: Cross multiply
    372,217.20x = 559,708.20 × 311,391.60
  4. Step 4: Simplify right side
    372,217.20x = 174,288,431,931.12
  5. Step 5: Solve for x
    x = 174,288,431,931.12/372,217.20
  6. Step 6: Final answer
    x = 468,243.90

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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.