Home / 315,619.38-435,538.35-172,351.44

Finding the Fourth Proportional to 315,619.38, 435,538.35 and 172,351.44

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Solution

The fourth proportional to 315,619.38, 435,538.35 and 172,351.44 is: 237,836.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,619.38 : 435,538.35 = 172,351.44 : x
  2. Step 2: Convert to fraction form
    315,619.38/435,538.35 = 172,351.44/x
  3. Step 3: Cross multiply
    315,619.38x = 435,538.35 × 172,351.44
  4. Step 4: Simplify right side
    315,619.38x = 75,065,661,797.72
  5. Step 5: Solve for x
    x = 75,065,661,797.72/315,619.38
  6. Step 6: Final answer
    x = 237,836.03

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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.