Home / 259,621.40-389,367.30-99,662.60

Finding the Fourth Proportional to 259,621.40, 389,367.30 and 99,662.60

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Solution

The fourth proportional to 259,621.40, 389,367.30 and 99,662.60 is: 149,469.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,621.40 : 389,367.30 = 99,662.60 : x
  2. Step 2: Convert to fraction form
    259,621.40/389,367.30 = 99,662.60/x
  3. Step 3: Cross multiply
    259,621.40x = 389,367.30 × 99,662.60
  4. Step 4: Simplify right side
    259,621.40x = 38,805,357,472.98
  5. Step 5: Solve for x
    x = 38,805,357,472.98/259,621.40
  6. Step 6: Final answer
    x = 149,469.02

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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.