Home / 217,768.12-300,512.23-122,278.84

Finding the Fourth Proportional to 217,768.12, 300,512.23 and 122,278.84

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Solution

The fourth proportional to 217,768.12, 300,512.23 and 122,278.84 is: 168,740.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,768.12 : 300,512.23 = 122,278.84 : x
  2. Step 2: Convert to fraction form
    217,768.12/300,512.23 = 122,278.84/x
  3. Step 3: Cross multiply
    217,768.12x = 300,512.23 × 122,278.84
  4. Step 4: Simplify right side
    217,768.12x = 36,746,286,890.21
  5. Step 5: Solve for x
    x = 36,746,286,890.21/217,768.12
  6. Step 6: Final answer
    x = 168,740.43

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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.