Home / 266,864,912.28-400,555,584.72-128,787,719.76

Finding the Fourth Proportional to 266,864,912.28, 400,555,584.72 and 128,787,719.76

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Solution

The fourth proportional to 266,864,912.28, 400,555,584.72 and 128,787,719.76 is: 193,306,193.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,864,912.28 : 400,555,584.72 = 128,787,719.76 : x
  2. Step 2: Convert to fraction form
    266,864,912.28/400,555,584.72 = 128,787,719.76/x
  3. Step 3: Cross multiply
    266,864,912.28x = 400,555,584.72 × 128,787,719.76
  4. Step 4: Simplify right side
    266,864,912.28x = 51,586,640,393,222,304
  5. Step 5: Solve for x
    x = 51,586,640,393,222,304/266,864,912.28
  6. Step 6: Final answer
    x = 193,306,193.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.