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Finding the Fourth Proportional to 418,228.22, 626,989.64 and 181,392.50

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Solution

The fourth proportional to 418,228.22, 626,989.64 and 181,392.50 is: 271,935.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,228.22 : 626,989.64 = 181,392.50 : x
  2. Step 2: Convert to fraction form
    418,228.22/626,989.64 = 181,392.50/x
  3. Step 3: Cross multiply
    418,228.22x = 626,989.64 × 181,392.50
  4. Step 4: Simplify right side
    418,228.22x = 113,731,218,273.70
  5. Step 5: Solve for x
    x = 113,731,218,273.70/418,228.22
  6. Step 6: Final answer
    x = 271,935.78

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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.