Home / 819,161.28-1,228,740.84-220,122.45

Finding the Fourth Proportional to 819,161.28, 1,228,740.84 and 220,122.45

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Solution

The fourth proportional to 819,161.28, 1,228,740.84 and 220,122.45 is: 330,183.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,161.28 : 1,228,740.84 = 220,122.45 : x
  2. Step 2: Convert to fraction form
    819,161.28/1,228,740.84 = 220,122.45/x
  3. Step 3: Cross multiply
    819,161.28x = 1,228,740.84 × 220,122.45
  4. Step 4: Simplify right side
    819,161.28x = 270,473,444,115.86
  5. Step 5: Solve for x
    x = 270,473,444,115.86/819,161.28
  6. Step 6: Final answer
    x = 330,183.38

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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.