Home / 253,824.80-380,276.40-206,823.20

Finding the Fourth Proportional to 253,824.80, 380,276.40 and 206,823.20

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Solution

The fourth proportional to 253,824.80, 380,276.40 and 206,823.20 is: 309,859.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,824.80 : 380,276.40 = 206,823.20 : x
  2. Step 2: Convert to fraction form
    253,824.80/380,276.40 = 206,823.20/x
  3. Step 3: Cross multiply
    253,824.80x = 380,276.40 × 206,823.20
  4. Step 4: Simplify right side
    253,824.80x = 78,649,981,932.48
  5. Step 5: Solve for x
    x = 78,649,981,932.48/253,824.80
  6. Step 6: Final answer
    x = 309,859.33

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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.