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Finding the Fourth Proportional to 266,876.90, 397,628.81 and 263,027.78

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Solution

The fourth proportional to 266,876.90, 397,628.81 and 263,027.78 is: 391,893.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,876.90 : 397,628.81 = 263,027.78 : x
  2. Step 2: Convert to fraction form
    266,876.90/397,628.81 = 263,027.78/x
  3. Step 3: Cross multiply
    266,876.90x = 397,628.81 × 263,027.78
  4. Step 4: Simplify right side
    266,876.90x = 104,587,423,158.34
  5. Step 5: Solve for x
    x = 104,587,423,158.34/266,876.90
  6. Step 6: Final answer
    x = 391,893.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.