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Finding the Fourth Proportional to 223,679.34, 308,672.91 and 121,706.82

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Solution

The fourth proportional to 223,679.34, 308,672.91 and 121,706.82 is: 167,952.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,679.34 : 308,672.91 = 121,706.82 : x
  2. Step 2: Convert to fraction form
    223,679.34/308,672.91 = 121,706.82/x
  3. Step 3: Cross multiply
    223,679.34x = 308,672.91 × 121,706.82
  4. Step 4: Simplify right side
    223,679.34x = 37,567,598,296.25
  5. Step 5: Solve for x
    x = 37,567,598,296.25/223,679.34
  6. Step 6: Final answer
    x = 167,952.92

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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.