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Finding the Fourth Proportional to 266,654.70, 399,010.05 and 196,670.70

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Solution

The fourth proportional to 266,654.70, 399,010.05 and 196,670.70 is: 294,289.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,654.70 : 399,010.05 = 196,670.70 : x
  2. Step 2: Convert to fraction form
    266,654.70/399,010.05 = 196,670.70/x
  3. Step 3: Cross multiply
    266,654.70x = 399,010.05 × 196,670.70
  4. Step 4: Simplify right side
    266,654.70x = 78,473,585,840.54
  5. Step 5: Solve for x
    x = 78,473,585,840.54/266,654.70
  6. Step 6: Final answer
    x = 294,289.15

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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.