Home / 259,664.10-389,496.15-215,340.90

Finding the Fourth Proportional to 259,664.10, 389,496.15 and 215,340.90

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Solution

The fourth proportional to 259,664.10, 389,496.15 and 215,340.90 is: 323,011.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,664.10 : 389,496.15 = 215,340.90 : x
  2. Step 2: Convert to fraction form
    259,664.10/389,496.15 = 215,340.90/x
  3. Step 3: Cross multiply
    259,664.10x = 389,496.15 × 215,340.90
  4. Step 4: Simplify right side
    259,664.10x = 83,874,451,487.54
  5. Step 5: Solve for x
    x = 83,874,451,487.54/259,664.10
  6. Step 6: Final answer
    x = 323,011.35

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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.