Home / 285,617.28-394,137.60-158,291.76

Finding the Fourth Proportional to 285,617.28, 394,137.60 and 158,291.76

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Solution

The fourth proportional to 285,617.28, 394,137.60 and 158,291.76 is: 218,434.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,617.28 : 394,137.60 = 158,291.76 : x
  2. Step 2: Convert to fraction form
    285,617.28/394,137.60 = 158,291.76/x
  3. Step 3: Cross multiply
    285,617.28x = 394,137.60 × 158,291.76
  4. Step 4: Simplify right side
    285,617.28x = 62,388,734,386.18
  5. Step 5: Solve for x
    x = 62,388,734,386.18/285,617.28
  6. Step 6: Final answer
    x = 218,434.73

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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.