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Finding the Fourth Proportional to 326,998.60, 490,811.10 and 169,340.20

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Solution

The fourth proportional to 326,998.60, 490,811.10 and 169,340.20 is: 254,172.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,998.60 : 490,811.10 = 169,340.20 : x
  2. Step 2: Convert to fraction form
    326,998.60/490,811.10 = 169,340.20/x
  3. Step 3: Cross multiply
    326,998.60x = 490,811.10 × 169,340.20
  4. Step 4: Simplify right side
    326,998.60x = 83,114,049,836.22
  5. Step 5: Solve for x
    x = 83,114,049,836.22/326,998.60
  6. Step 6: Final answer
    x = 254,172.49

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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.