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Finding the Fourth Proportional to 327,228.80, 490,843.20 and 290,487.20

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Solution

The fourth proportional to 327,228.80, 490,843.20 and 290,487.20 is: 435,730.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,228.80 : 490,843.20 = 290,487.20 : x
  2. Step 2: Convert to fraction form
    327,228.80/490,843.20 = 290,487.20/x
  3. Step 3: Cross multiply
    327,228.80x = 490,843.20 × 290,487.20
  4. Step 4: Simplify right side
    327,228.80x = 142,583,666,807.04
  5. Step 5: Solve for x
    x = 142,583,666,807.04/327,228.80
  6. Step 6: Final answer
    x = 435,730.80

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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.