Home / 315,834.32-435,832.80-172,595.44

Finding the Fourth Proportional to 315,834.32, 435,832.80 and 172,595.44

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Solution

The fourth proportional to 315,834.32, 435,832.80 and 172,595.44 is: 238,171.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,834.32 : 435,832.80 = 172,595.44 : x
  2. Step 2: Convert to fraction form
    315,834.32/435,832.80 = 172,595.44/x
  3. Step 3: Cross multiply
    315,834.32x = 435,832.80 × 172,595.44
  4. Step 4: Simplify right side
    315,834.32x = 75,222,753,882.43
  5. Step 5: Solve for x
    x = 75,222,753,882.43/315,834.32
  6. Step 6: Final answer
    x = 238,171.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.