Home / 315,620.26-435,565.39-172,387.06

Finding the Fourth Proportional to 315,620.26, 435,565.39 and 172,387.06

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Solution

The fourth proportional to 315,620.26, 435,565.39 and 172,387.06 is: 237,899.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,620.26 : 435,565.39 = 172,387.06 : x
  2. Step 2: Convert to fraction form
    315,620.26/435,565.39 = 172,387.06/x
  3. Step 3: Cross multiply
    315,620.26x = 435,565.39 × 172,387.06
  4. Step 4: Simplify right side
    315,620.26x = 75,085,834,632.29
  5. Step 5: Solve for x
    x = 75,085,834,632.29/315,620.26
  6. Step 6: Final answer
    x = 237,899.29

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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.