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Finding the Fourth Proportional to 474,176.38, 655,100.21 and 397,576.70

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Solution

The fourth proportional to 474,176.38, 655,100.21 and 397,576.70 is: 549,273.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,176.38 : 655,100.21 = 397,576.70 : x
  2. Step 2: Convert to fraction form
    474,176.38/655,100.21 = 397,576.70/x
  3. Step 3: Cross multiply
    474,176.38x = 655,100.21 × 397,576.70
  4. Step 4: Simplify right side
    474,176.38x = 260,452,579,310.97
  5. Step 5: Solve for x
    x = 260,452,579,310.97/474,176.38
  6. Step 6: Final answer
    x = 549,273.63

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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.