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Finding the Fourth Proportional to 485,074.28, 669,422.64 and 270,214.28

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Solution

The fourth proportional to 485,074.28, 669,422.64 and 270,214.28 is: 372,906.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,074.28 : 669,422.64 = 270,214.28 : x
  2. Step 2: Convert to fraction form
    485,074.28/669,422.64 = 270,214.28/x
  3. Step 3: Cross multiply
    485,074.28x = 669,422.64 × 270,214.28
  4. Step 4: Simplify right side
    485,074.28x = 180,887,556,683.30
  5. Step 5: Solve for x
    x = 180,887,556,683.30/485,074.28
  6. Step 6: Final answer
    x = 372,906.92

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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.