Home / 312,600.35-431,229.77-197,685.46

Finding the Fourth Proportional to 312,600.35, 431,229.77 and 197,685.46

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Solution

The fourth proportional to 312,600.35, 431,229.77 and 197,685.46 is: 272,705.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,600.35 : 431,229.77 = 197,685.46 : x
  2. Step 2: Convert to fraction form
    312,600.35/431,229.77 = 197,685.46/x
  3. Step 3: Cross multiply
    312,600.35x = 431,229.77 × 197,685.46
  4. Step 4: Simplify right side
    312,600.35x = 85,247,855,448.14
  5. Step 5: Solve for x
    x = 85,247,855,448.14/312,600.35
  6. Step 6: Final answer
    x = 272,705.57

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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.