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Finding the Fourth Proportional to 281,138.47, 421,660.73 and 123,324.55

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Solution

The fourth proportional to 281,138.47, 421,660.73 and 123,324.55 is: 184,966.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,138.47 : 421,660.73 = 123,324.55 : x
  2. Step 2: Convert to fraction form
    281,138.47/421,660.73 = 123,324.55/x
  3. Step 3: Cross multiply
    281,138.47x = 421,660.73 × 123,324.55
  4. Step 4: Simplify right side
    281,138.47x = 52,001,119,163.30
  5. Step 5: Solve for x
    x = 52,001,119,163.30/281,138.47
  6. Step 6: Final answer
    x = 184,966.22

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1.5x scale

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.