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Finding the Fourth Proportional to 305,000.56, 420,930.18 and 169,063.96

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Solution

The fourth proportional to 305,000.56, 420,930.18 and 169,063.96 is: 233,324.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,000.56 : 420,930.18 = 169,063.96 : x
  2. Step 2: Convert to fraction form
    305,000.56/420,930.18 = 169,063.96/x
  3. Step 3: Cross multiply
    305,000.56x = 420,930.18 × 169,063.96
  4. Step 4: Simplify right side
    305,000.56x = 71,164,123,114.31
  5. Step 5: Solve for x
    x = 71,164,123,114.31/305,000.56
  6. Step 6: Final answer
    x = 233,324.57

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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.