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Finding the Fourth Proportional to 418,375.44, 577,366.92 and 257,321.52

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Solution

The fourth proportional to 418,375.44, 577,366.92 and 257,321.52 is: 355,109.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,375.44 : 577,366.92 = 257,321.52 : x
  2. Step 2: Convert to fraction form
    418,375.44/577,366.92 = 257,321.52/x
  3. Step 3: Cross multiply
    418,375.44x = 577,366.92 × 257,321.52
  4. Step 4: Simplify right side
    418,375.44x = 148,568,933,452.12
  5. Step 5: Solve for x
    x = 148,568,933,452.12/418,375.44
  6. Step 6: Final answer
    x = 355,109.12

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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.