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Finding the Fourth Proportional to 259,803.60, 389,244.60 and 220,174.80

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Solution

The fourth proportional to 259,803.60, 389,244.60 and 220,174.80 is: 329,871.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,803.60 : 389,244.60 = 220,174.80 : x
  2. Step 2: Convert to fraction form
    259,803.60/389,244.60 = 220,174.80/x
  3. Step 3: Cross multiply
    259,803.60x = 389,244.60 × 220,174.80
  4. Step 4: Simplify right side
    259,803.60x = 85,701,851,956.08
  5. Step 5: Solve for x
    x = 85,701,851,956.08/259,803.60
  6. Step 6: Final answer
    x = 329,871.69

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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.