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Finding the Fourth Proportional to 266,086, 399,194.76 and 79,096.72

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Solution

The fourth proportional to 266,086, 399,194.76 and 79,096.72 is: 118,664.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,086 : 399,194.76 = 79,096.72 : x
  2. Step 2: Convert to fraction form
    266,086/399,194.76 = 79,096.72/x
  3. Step 3: Cross multiply
    266,086x = 399,194.76 × 79,096.72
  4. Step 4: Simplify right side
    266,086x = 31,574,996,157.19
  5. Step 5: Solve for x
    x = 31,574,996,157.19/266,086
  6. Step 6: Final answer
    x = 118,664.63

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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.