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Finding the Fourth Proportional to 323,425.66, 485,190.33 and 136,464.70

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Solution

The fourth proportional to 323,425.66, 485,190.33 and 136,464.70 is: 204,718.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,425.66 : 485,190.33 = 136,464.70 : x
  2. Step 2: Convert to fraction form
    323,425.66/485,190.33 = 136,464.70/x
  3. Step 3: Cross multiply
    323,425.66x = 485,190.33 × 136,464.70
  4. Step 4: Simplify right side
    323,425.66x = 66,211,352,826.35
  5. Step 5: Solve for x
    x = 66,211,352,826.35/323,425.66
  6. Step 6: Final answer
    x = 204,718.92

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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.