Home / 279,845.47-386,195.76-158,984.56

Finding the Fourth Proportional to 279,845.47, 386,195.76 and 158,984.56

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Solution

The fourth proportional to 279,845.47, 386,195.76 and 158,984.56 is: 219,403.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,845.47 : 386,195.76 = 158,984.56 : x
  2. Step 2: Convert to fraction form
    279,845.47/386,195.76 = 158,984.56/x
  3. Step 3: Cross multiply
    279,845.47x = 386,195.76 × 158,984.56
  4. Step 4: Simplify right side
    279,845.47x = 61,399,162,977.47
  5. Step 5: Solve for x
    x = 61,399,162,977.47/279,845.47
  6. Step 6: Final answer
    x = 219,403.81

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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.