Home / 315,847.24-435,856.26-172,612.12

Finding the Fourth Proportional to 315,847.24, 435,856.26 and 172,612.12

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Solution

The fourth proportional to 315,847.24, 435,856.26 and 172,612.12 is: 238,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,847.24 : 435,856.26 = 172,612.12 : x
  2. Step 2: Convert to fraction form
    315,847.24/435,856.26 = 172,612.12/x
  3. Step 3: Cross multiply
    315,847.24x = 435,856.26 × 172,612.12
  4. Step 4: Simplify right side
    315,847.24x = 75,234,073,053.87
  5. Step 5: Solve for x
    x = 75,234,073,053.87/315,847.24
  6. Step 6: Final answer
    x = 238,197.66

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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.