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Finding the Fourth Proportional to 305,692.44, 421,868.74 and 169,726.39

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Solution

The fourth proportional to 305,692.44, 421,868.74 and 169,726.39 is: 234,229.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,692.44 : 421,868.74 = 169,726.39 : x
  2. Step 2: Convert to fraction form
    305,692.44/421,868.74 = 169,726.39/x
  3. Step 3: Cross multiply
    305,692.44x = 421,868.74 × 169,726.39
  4. Step 4: Simplify right side
    305,692.44x = 71,602,258,294.05
  5. Step 5: Solve for x
    x = 71,602,258,294.05/305,692.44
  6. Step 6: Final answer
    x = 234,229.73

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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.