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Finding the Fourth Proportional to 326,940.60, 490,600.44 and 137,386.04

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Solution

The fourth proportional to 326,940.60, 490,600.44 and 137,386.04 is: 206,158.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,940.60 : 490,600.44 = 137,386.04 : x
  2. Step 2: Convert to fraction form
    326,940.60/490,600.44 = 137,386.04/x
  3. Step 3: Cross multiply
    326,940.60x = 490,600.44 × 137,386.04
  4. Step 4: Simplify right side
    326,940.60x = 67,401,651,673.86
  5. Step 5: Solve for x
    x = 67,401,651,673.86/326,940.60
  6. Step 6: Final answer
    x = 206,158.71

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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.