Home / 286,786.20-430,179.30-99,797.70

Finding the Fourth Proportional to 286,786.20, 430,179.30 and 99,797.70

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Solution

The fourth proportional to 286,786.20, 430,179.30 and 99,797.70 is: 149,696.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,786.20 : 430,179.30 = 99,797.70 : x
  2. Step 2: Convert to fraction form
    286,786.20/430,179.30 = 99,797.70/x
  3. Step 3: Cross multiply
    286,786.20x = 430,179.30 × 99,797.70
  4. Step 4: Simplify right side
    286,786.20x = 42,930,904,727.61
  5. Step 5: Solve for x
    x = 42,930,904,727.61/286,786.20
  6. Step 6: Final answer
    x = 149,696.55

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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.