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Finding the Fourth Proportional to 269,200.80, 403,855.20 and 79,660.80

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Solution

The fourth proportional to 269,200.80, 403,855.20 and 79,660.80 is: 119,507.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,200.80 : 403,855.20 = 79,660.80 : x
  2. Step 2: Convert to fraction form
    269,200.80/403,855.20 = 79,660.80/x
  3. Step 3: Cross multiply
    269,200.80x = 403,855.20 × 79,660.80
  4. Step 4: Simplify right side
    269,200.80x = 32,171,428,316.16
  5. Step 5: Solve for x
    x = 32,171,428,316.16/269,200.80
  6. Step 6: Final answer
    x = 119,507.18

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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.