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Finding the Fourth Proportional to 326,974.62, 490,555.73 and 137,337.46

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Solution

The fourth proportional to 326,974.62, 490,555.73 and 137,337.46 is: 206,045.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,974.62 : 490,555.73 = 137,337.46 : x
  2. Step 2: Convert to fraction form
    326,974.62/490,555.73 = 137,337.46/x
  3. Step 3: Cross multiply
    326,974.62x = 490,555.73 × 137,337.46
  4. Step 4: Simplify right side
    326,974.62x = 67,371,677,063.60
  5. Step 5: Solve for x
    x = 67,371,677,063.60/326,974.62
  6. Step 6: Final answer
    x = 206,045.58

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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.