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Finding the Fourth Proportional to 323,414.20, 485,034.90 and 98,774.20

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Solution

The fourth proportional to 323,414.20, 485,034.90 and 98,774.20 is: 148,134.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,414.20 : 485,034.90 = 98,774.20 : x
  2. Step 2: Convert to fraction form
    323,414.20/485,034.90 = 98,774.20/x
  3. Step 3: Cross multiply
    323,414.20x = 485,034.90 × 98,774.20
  4. Step 4: Simplify right side
    323,414.20x = 47,908,934,219.58
  5. Step 5: Solve for x
    x = 47,908,934,219.58/323,414.20
  6. Step 6: Final answer
    x = 148,134.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.