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Finding the Fourth Proportional to 266,610.79, 399,903.78 and 66,926.76

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Solution

The fourth proportional to 266,610.79, 399,903.78 and 66,926.76 is: 100,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,610.79 : 399,903.78 = 66,926.76 : x
  2. Step 2: Convert to fraction form
    266,610.79/399,903.78 = 66,926.76/x
  3. Step 3: Cross multiply
    266,610.79x = 399,903.78 × 66,926.76
  4. Step 4: Simplify right side
    266,610.79x = 26,764,263,058.49
  5. Step 5: Solve for x
    x = 26,764,263,058.49/266,610.79
  6. Step 6: Final answer
    x = 100,387.02

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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.