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Finding the Fourth Proportional to 485,057.47, 669,400.01 and 270,197.68

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Solution

The fourth proportional to 485,057.47, 669,400.01 and 270,197.68 is: 372,884.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,057.47 : 669,400.01 = 270,197.68 : x
  2. Step 2: Convert to fraction form
    485,057.47/669,400.01 = 270,197.68/x
  3. Step 3: Cross multiply
    485,057.47x = 669,400.01 × 270,197.68
  4. Step 4: Simplify right side
    485,057.47x = 180,870,327,022.47
  5. Step 5: Solve for x
    x = 180,870,327,022.47/485,057.47
  6. Step 6: Final answer
    x = 372,884.33

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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.