Home / 814,065.68-1,221,156.84-215,020.86

Finding the Fourth Proportional to 814,065.68, 1,221,156.84 and 215,020.86

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Solution

The fourth proportional to 814,065.68, 1,221,156.84 and 215,020.86 is: 322,546.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,065.68 : 1,221,156.84 = 215,020.86 : x
  2. Step 2: Convert to fraction form
    814,065.68/1,221,156.84 = 215,020.86/x
  3. Step 3: Cross multiply
    814,065.68x = 1,221,156.84 × 215,020.86
  4. Step 4: Simplify right side
    814,065.68x = 262,574,193,931.68
  5. Step 5: Solve for x
    x = 262,574,193,931.68/814,065.68
  6. Step 6: Final answer
    x = 322,546.70

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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.