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Finding the Fourth Proportional to 218,859.20, 328,288.80 and 179,460.80

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Solution

The fourth proportional to 218,859.20, 328,288.80 and 179,460.80 is: 269,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,859.20 : 328,288.80 = 179,460.80 : x
  2. Step 2: Convert to fraction form
    218,859.20/328,288.80 = 179,460.80/x
  3. Step 3: Cross multiply
    218,859.20x = 328,288.80 × 179,460.80
  4. Step 4: Simplify right side
    218,859.20x = 58,914,970,679.04
  5. Step 5: Solve for x
    x = 58,914,970,679.04/218,859.20
  6. Step 6: Final answer
    x = 269,191.20

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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.