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Finding the Fourth Proportional to 326,974.60, 490,775.10 and 169,316.20

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Solution

The fourth proportional to 326,974.60, 490,775.10 and 169,316.20 is: 254,136.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,974.60 : 490,775.10 = 169,316.20 : x
  2. Step 2: Convert to fraction form
    326,974.60/490,775.10 = 169,316.20/x
  3. Step 3: Cross multiply
    326,974.60x = 490,775.10 × 169,316.20
  4. Step 4: Simplify right side
    326,974.60x = 83,096,174,986.62
  5. Step 5: Solve for x
    x = 83,096,174,986.62/326,974.60
  6. Step 6: Final answer
    x = 254,136.48

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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.