Home / 286,882.20-430,323.30-172,720.80

Finding the Fourth Proportional to 286,882.20, 430,323.30 and 172,720.80

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Solution

The fourth proportional to 286,882.20, 430,323.30 and 172,720.80 is: 259,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,882.20 : 430,323.30 = 172,720.80 : x
  2. Step 2: Convert to fraction form
    286,882.20/430,323.30 = 172,720.80/x
  3. Step 3: Cross multiply
    286,882.20x = 430,323.30 × 172,720.80
  4. Step 4: Simplify right side
    286,882.20x = 74,325,784,634.64
  5. Step 5: Solve for x
    x = 74,325,784,634.64/286,882.20
  6. Step 6: Final answer
    x = 259,081.20

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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.