Home / 274,607.75-378,635.85-220,116.35

Finding the Fourth Proportional to 274,607.75, 378,635.85 and 220,116.35

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Solution

The fourth proportional to 274,607.75, 378,635.85 and 220,116.35 is: 303,501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,607.75 : 378,635.85 = 220,116.35 : x
  2. Step 2: Convert to fraction form
    274,607.75/378,635.85 = 220,116.35/x
  3. Step 3: Cross multiply
    274,607.75x = 378,635.85 × 220,116.35
  4. Step 4: Simplify right side
    274,607.75x = 83,343,942,227.74
  5. Step 5: Solve for x
    x = 83,343,942,227.74/274,607.75
  6. Step 6: Final answer
    x = 303,501.78

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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.