Home / 315,882.20-435,910.96-172,643.26

Finding the Fourth Proportional to 315,882.20, 435,910.96 and 172,643.26

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Solution

The fourth proportional to 315,882.20, 435,910.96 and 172,643.26 is: 238,244.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,882.20 : 435,910.96 = 172,643.26 : x
  2. Step 2: Convert to fraction form
    315,882.20/435,910.96 = 172,643.26/x
  3. Step 3: Cross multiply
    315,882.20x = 435,910.96 × 172,643.26
  4. Step 4: Simplify right side
    315,882.20x = 75,257,089,204.13
  5. Step 5: Solve for x
    x = 75,257,089,204.13/315,882.20
  6. Step 6: Final answer
    x = 238,244.16

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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.