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Finding the Fourth Proportional to 323,980.38, 485,974.89 and 113,624.46

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Solution

The fourth proportional to 323,980.38, 485,974.89 and 113,624.46 is: 170,438.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,980.38 : 485,974.89 = 113,624.46 : x
  2. Step 2: Convert to fraction form
    323,980.38/485,974.89 = 113,624.46/x
  3. Step 3: Cross multiply
    323,980.38x = 485,974.89 × 113,624.46
  4. Step 4: Simplify right side
    323,980.38x = 55,218,634,449.81
  5. Step 5: Solve for x
    x = 55,218,634,449.81/323,980.38
  6. Step 6: Final answer
    x = 170,438.21

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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.