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Finding the Fourth Proportional to 485,057.34, 669,399.84 and 270,197.55

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Solution

The fourth proportional to 485,057.34, 669,399.84 and 270,197.55 is: 372,884.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,057.34 : 669,399.84 = 270,197.55 : x
  2. Step 2: Convert to fraction form
    485,057.34/669,399.84 = 270,197.55/x
  3. Step 3: Cross multiply
    485,057.34x = 669,399.84 × 270,197.55
  4. Step 4: Simplify right side
    485,057.34x = 180,870,196,738.39
  5. Step 5: Solve for x
    x = 180,870,196,738.39/485,057.34
  6. Step 6: Final answer
    x = 372,884.16

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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.