Home / 315,680.24-435,649.20-172,453.60

Finding the Fourth Proportional to 315,680.24, 435,649.20 and 172,453.60

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Solution

The fourth proportional to 315,680.24, 435,649.20 and 172,453.60 is: 237,991.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,680.24 : 435,649.20 = 172,453.60 : x
  2. Step 2: Convert to fraction form
    315,680.24/435,649.20 = 172,453.60/x
  3. Step 3: Cross multiply
    315,680.24x = 435,649.20 × 172,453.60
  4. Step 4: Simplify right side
    315,680.24x = 75,129,272,877.12
  5. Step 5: Solve for x
    x = 75,129,272,877.12/315,680.24
  6. Step 6: Final answer
    x = 237,991.69

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1.5x scale

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.