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Finding the Fourth Proportional to 305,654.50, 421,783.77 and 169,691.14

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Solution

The fourth proportional to 305,654.50, 421,783.77 and 169,691.14 is: 234,162.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,654.50 : 421,783.77 = 169,691.14 : x
  2. Step 2: Convert to fraction form
    305,654.50/421,783.77 = 169,691.14/x
  3. Step 3: Cross multiply
    305,654.50x = 421,783.77 × 169,691.14
  4. Step 4: Simplify right side
    305,654.50x = 71,572,968,764.80
  5. Step 5: Solve for x
    x = 71,572,968,764.80/305,654.50
  6. Step 6: Final answer
    x = 234,162.98

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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.