Home / 259,272.20-388,908.30-217,800.20

Finding the Fourth Proportional to 259,272.20, 388,908.30 and 217,800.20

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Solution

The fourth proportional to 259,272.20, 388,908.30 and 217,800.20 is: 326,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,272.20 : 388,908.30 = 217,800.20 : x
  2. Step 2: Convert to fraction form
    259,272.20/388,908.30 = 217,800.20/x
  3. Step 3: Cross multiply
    259,272.20x = 388,908.30 × 217,800.20
  4. Step 4: Simplify right side
    259,272.20x = 84,704,305,521.66
  5. Step 5: Solve for x
    x = 84,704,305,521.66/259,272.20
  6. Step 6: Final answer
    x = 326,700.30

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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.