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Finding the Fourth Proportional to 327,246.80, 490,870.20 and 290,505.20

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Solution

The fourth proportional to 327,246.80, 490,870.20 and 290,505.20 is: 435,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,246.80 : 490,870.20 = 290,505.20 : x
  2. Step 2: Convert to fraction form
    327,246.80/490,870.20 = 290,505.20/x
  3. Step 3: Cross multiply
    327,246.80x = 490,870.20 × 290,505.20
  4. Step 4: Simplify right side
    327,246.80x = 142,600,345,625.04
  5. Step 5: Solve for x
    x = 142,600,345,625.04/327,246.80
  6. Step 6: Final answer
    x = 435,757.80

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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.