Home / 275,931.20-380,786.55-161,216.57

Finding the Fourth Proportional to 275,931.20, 380,786.55 and 161,216.57

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Solution

The fourth proportional to 275,931.20, 380,786.55 and 161,216.57 is: 222,479.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,931.20 : 380,786.55 = 161,216.57 : x
  2. Step 2: Convert to fraction form
    275,931.20/380,786.55 = 161,216.57/x
  3. Step 3: Cross multiply
    275,931.20x = 380,786.55 × 161,216.57
  4. Step 4: Simplify right side
    275,931.20x = 61,389,101,493.13
  5. Step 5: Solve for x
    x = 61,389,101,493.13/275,931.20
  6. Step 6: Final answer
    x = 222,479.74

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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.