Home / 437,515.20-656,272.80-279,921.60

Finding the Fourth Proportional to 437,515.20, 656,272.80 and 279,921.60

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Solution

The fourth proportional to 437,515.20, 656,272.80 and 279,921.60 is: 419,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,515.20 : 656,272.80 = 279,921.60 : x
  2. Step 2: Convert to fraction form
    437,515.20/656,272.80 = 279,921.60/x
  3. Step 3: Cross multiply
    437,515.20x = 656,272.80 × 279,921.60
  4. Step 4: Simplify right side
    437,515.20x = 183,704,932,212.48
  5. Step 5: Solve for x
    x = 183,704,932,212.48/437,515.20
  6. Step 6: Final answer
    x = 419,882.40

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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.