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Finding the Fourth Proportional to 266,590.98, 367,657.11 and 221,196.96

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Solution

The fourth proportional to 266,590.98, 367,657.11 and 221,196.96 is: 305,053.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,590.98 : 367,657.11 = 221,196.96 : x
  2. Step 2: Convert to fraction form
    266,590.98/367,657.11 = 221,196.96/x
  3. Step 3: Cross multiply
    266,590.98x = 367,657.11 × 221,196.96
  4. Step 4: Simplify right side
    266,590.98x = 81,324,635,054.39
  5. Step 5: Solve for x
    x = 81,324,635,054.39/266,590.98
  6. Step 6: Final answer
    x = 305,053.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.