Home / 312,928.08-431,727.56-205,556.56

Finding the Fourth Proportional to 312,928.08, 431,727.56 and 205,556.56

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Solution

The fourth proportional to 312,928.08, 431,727.56 and 205,556.56 is: 283,593.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,928.08 : 431,727.56 = 205,556.56 : x
  2. Step 2: Convert to fraction form
    312,928.08/431,727.56 = 205,556.56/x
  3. Step 3: Cross multiply
    312,928.08x = 431,727.56 × 205,556.56
  4. Step 4: Simplify right side
    312,928.08x = 88,744,432,090.79
  5. Step 5: Solve for x
    x = 88,744,432,090.79/312,928.08
  6. Step 6: Final answer
    x = 283,593.70

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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.