Home / 213,998.10-320,875.65-80,882.70

Finding the Fourth Proportional to 213,998.10, 320,875.65 and 80,882.70

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Solution

The fourth proportional to 213,998.10, 320,875.65 and 80,882.70 is: 121,278.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,998.10 : 320,875.65 = 80,882.70 : x
  2. Step 2: Convert to fraction form
    213,998.10/320,875.65 = 80,882.70/x
  3. Step 3: Cross multiply
    213,998.10x = 320,875.65 × 80,882.70
  4. Step 4: Simplify right side
    213,998.10x = 25,953,288,936.26
  5. Step 5: Solve for x
    x = 25,953,288,936.26/213,998.10
  6. Step 6: Final answer
    x = 121,278.13

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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.