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Finding the Fourth Proportional to 418,218.87, 626,975.64 and 181,383.17

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Solution

The fourth proportional to 418,218.87, 626,975.64 and 181,383.17 is: 271,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,218.87 : 626,975.64 = 181,383.17 : x
  2. Step 2: Convert to fraction form
    418,218.87/626,975.64 = 181,383.17/x
  3. Step 3: Cross multiply
    418,218.87x = 626,975.64 × 181,383.17
  4. Step 4: Simplify right side
    418,218.87x = 113,722,829,095.98
  5. Step 5: Solve for x
    x = 113,722,829,095.98/418,218.87
  6. Step 6: Final answer
    x = 271,921.80

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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.