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Finding the Fourth Proportional to 418,231.50, 626,994.50 and 181,395.78

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Solution

The fourth proportional to 418,231.50, 626,994.50 and 181,395.78 is: 271,940.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,231.50 : 626,994.50 = 181,395.78 : x
  2. Step 2: Convert to fraction form
    418,231.50/626,994.50 = 181,395.78/x
  3. Step 3: Cross multiply
    418,231.50x = 626,994.50 × 181,395.78
  4. Step 4: Simplify right side
    418,231.50x = 113,734,155,476.23
  5. Step 5: Solve for x
    x = 113,734,155,476.23/418,231.50
  6. Step 6: Final answer
    x = 271,940.67

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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.