Home / 259,746.30-389,619.45-206,602.20

Finding the Fourth Proportional to 259,746.30, 389,619.45 and 206,602.20

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Solution

The fourth proportional to 259,746.30, 389,619.45 and 206,602.20 is: 309,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,746.30 : 389,619.45 = 206,602.20 : x
  2. Step 2: Convert to fraction form
    259,746.30/389,619.45 = 206,602.20/x
  3. Step 3: Cross multiply
    259,746.30x = 389,619.45 × 206,602.20
  4. Step 4: Simplify right side
    259,746.30x = 80,496,235,532.79
  5. Step 5: Solve for x
    x = 80,496,235,532.79/259,746.30
  6. Step 6: Final answer
    x = 309,903.30

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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.