Home / 221,768.10-306,039.78-119,793.53

Finding the Fourth Proportional to 221,768.10, 306,039.78 and 119,793.53

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Solution

The fourth proportional to 221,768.10, 306,039.78 and 119,793.53 is: 165,314.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,768.10 : 306,039.78 = 119,793.53 : x
  2. Step 2: Convert to fraction form
    221,768.10/306,039.78 = 119,793.53/x
  3. Step 3: Cross multiply
    221,768.10x = 306,039.78 × 119,793.53
  4. Step 4: Simplify right side
    221,768.10x = 36,661,584,036.42
  5. Step 5: Solve for x
    x = 36,661,584,036.42/221,768.10
  6. Step 6: Final answer
    x = 165,314.96

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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.