Home / 281,147.70-421,721.55-186,669.30

Finding the Fourth Proportional to 281,147.70, 421,721.55 and 186,669.30

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Solution

The fourth proportional to 281,147.70, 421,721.55 and 186,669.30 is: 280,003.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,147.70 : 421,721.55 = 186,669.30 : x
  2. Step 2: Convert to fraction form
    281,147.70/421,721.55 = 186,669.30/x
  3. Step 3: Cross multiply
    281,147.70x = 421,721.55 × 186,669.30
  4. Step 4: Simplify right side
    281,147.70x = 78,722,466,533.42
  5. Step 5: Solve for x
    x = 78,722,466,533.42/281,147.70
  6. Step 6: Final answer
    x = 280,003.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.