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Finding the Fourth Proportional to 323,380.12, 485,070.21 and 123,761.74

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Solution

The fourth proportional to 323,380.12, 485,070.21 and 123,761.74 is: 185,642.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,380.12 : 485,070.21 = 123,761.74 : x
  2. Step 2: Convert to fraction form
    323,380.12/485,070.21 = 123,761.74/x
  3. Step 3: Cross multiply
    323,380.12x = 485,070.21 × 123,761.74
  4. Step 4: Simplify right side
    323,380.12x = 60,033,133,211.77
  5. Step 5: Solve for x
    x = 60,033,133,211.77/323,380.12
  6. Step 6: Final answer
    x = 185,642.62

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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.