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Finding the Fourth Proportional to 218,049.60, 326,855.70 and 99,805.80

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Solution

The fourth proportional to 218,049.60, 326,855.70 and 99,805.80 is: 149,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,049.60 : 326,855.70 = 99,805.80 : x
  2. Step 2: Convert to fraction form
    218,049.60/326,855.70 = 99,805.80/x
  3. Step 3: Cross multiply
    218,049.60x = 326,855.70 × 99,805.80
  4. Step 4: Simplify right side
    218,049.60x = 32,622,094,623.06
  5. Step 5: Solve for x
    x = 32,622,094,623.06/218,049.60
  6. Step 6: Final answer
    x = 149,608.60

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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.