Home / 312,834.72-431,734.80-178,695.84

Finding the Fourth Proportional to 312,834.72, 431,734.80 and 178,695.84

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Solution

The fourth proportional to 312,834.72, 431,734.80 and 178,695.84 is: 246,613.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,834.72 : 431,734.80 = 178,695.84 : x
  2. Step 2: Convert to fraction form
    312,834.72/431,734.80 = 178,695.84/x
  3. Step 3: Cross multiply
    312,834.72x = 431,734.80 × 178,695.84
  4. Step 4: Simplify right side
    312,834.72x = 77,149,212,743.23
  5. Step 5: Solve for x
    x = 77,149,212,743.23/312,834.72
  6. Step 6: Final answer
    x = 246,613.33

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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.