Home / 315,748.62-435,739.38-172,517.56

Finding the Fourth Proportional to 315,748.62, 435,739.38 and 172,517.56

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Solution

The fourth proportional to 315,748.62, 435,739.38 and 172,517.56 is: 238,077.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,748.62 : 435,739.38 = 172,517.56 : x
  2. Step 2: Convert to fraction form
    315,748.62/435,739.38 = 172,517.56/x
  3. Step 3: Cross multiply
    315,748.62x = 435,739.38 × 172,517.56
  4. Step 4: Simplify right side
    315,748.62x = 75,172,694,633.51
  5. Step 5: Solve for x
    x = 75,172,694,633.51/315,748.62
  6. Step 6: Final answer
    x = 238,077.67

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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.