Home / 259,273.20-388,909.80-109,682.40

Finding the Fourth Proportional to 259,273.20, 388,909.80 and 109,682.40

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Solution

The fourth proportional to 259,273.20, 388,909.80 and 109,682.40 is: 164,523.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,273.20 : 388,909.80 = 109,682.40 : x
  2. Step 2: Convert to fraction form
    259,273.20/388,909.80 = 109,682.40/x
  3. Step 3: Cross multiply
    259,273.20x = 388,909.80 × 109,682.40
  4. Step 4: Simplify right side
    259,273.20x = 42,656,560,247.52
  5. Step 5: Solve for x
    x = 42,656,560,247.52/259,273.20
  6. Step 6: Final answer
    x = 164,523.60

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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.