Home / 320,704.02-442,279.17-275,367.78

Finding the Fourth Proportional to 320,704.02, 442,279.17 and 275,367.78

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Solution

The fourth proportional to 320,704.02, 442,279.17 and 275,367.78 is: 379,756.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,704.02 : 442,279.17 = 275,367.78 : x
  2. Step 2: Convert to fraction form
    320,704.02/442,279.17 = 275,367.78/x
  3. Step 3: Cross multiply
    320,704.02x = 442,279.17 × 275,367.78
  4. Step 4: Simplify right side
    320,704.02x = 121,789,433,183.14
  5. Step 5: Solve for x
    x = 121,789,433,183.14/320,704.02
  6. Step 6: Final answer
    x = 379,756.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.