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Finding the Fourth Proportional to 418,228.42, 626,990 and 181,392.80

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Solution

The fourth proportional to 418,228.42, 626,990 and 181,392.80 is: 271,936.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,228.42 : 626,990 = 181,392.80 : x
  2. Step 2: Convert to fraction form
    418,228.42/626,990 = 181,392.80/x
  3. Step 3: Cross multiply
    418,228.42x = 626,990 × 181,392.80
  4. Step 4: Simplify right side
    418,228.42x = 113,731,471,672
  5. Step 5: Solve for x
    x = 113,731,471,672/418,228.42
  6. Step 6: Final answer
    x = 271,936.26

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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.