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Finding the Fourth Proportional to 269,728.20, 404,592.30 and 218,989.80

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Solution

The fourth proportional to 269,728.20, 404,592.30 and 218,989.80 is: 328,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,728.20 : 404,592.30 = 218,989.80 : x
  2. Step 2: Convert to fraction form
    269,728.20/404,592.30 = 218,989.80/x
  3. Step 3: Cross multiply
    269,728.20x = 404,592.30 × 218,989.80
  4. Step 4: Simplify right side
    269,728.20x = 88,601,586,858.54
  5. Step 5: Solve for x
    x = 88,601,586,858.54/269,728.20
  6. Step 6: Final answer
    x = 328,484.70

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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.