Home / 305,787.62-421,972.84-169,830.20

Finding the Fourth Proportional to 305,787.62, 421,972.84 and 169,830.20

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Solution

The fourth proportional to 305,787.62, 421,972.84 and 169,830.20 is: 234,357.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,787.62 : 421,972.84 = 169,830.20 : x
  2. Step 2: Convert to fraction form
    305,787.62/421,972.84 = 169,830.20/x
  3. Step 3: Cross multiply
    305,787.62x = 421,972.84 × 169,830.20
  4. Step 4: Simplify right side
    305,787.62x = 71,663,733,078.99
  5. Step 5: Solve for x
    x = 71,663,733,078.99/305,787.62
  6. Step 6: Final answer
    x = 234,357.86

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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.