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Finding the Fourth Proportional to 266,912.70, 400,271.85 and 133,748.70

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Solution

The fourth proportional to 266,912.70, 400,271.85 and 133,748.70 is: 200,574.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,912.70 : 400,271.85 = 133,748.70 : x
  2. Step 2: Convert to fraction form
    266,912.70/400,271.85 = 133,748.70/x
  3. Step 3: Cross multiply
    266,912.70x = 400,271.85 × 133,748.70
  4. Step 4: Simplify right side
    266,912.70x = 53,535,839,584.10
  5. Step 5: Solve for x
    x = 53,535,839,584.10/266,912.70
  6. Step 6: Final answer
    x = 200,574.34

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1.5x scale

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.