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Finding the Fourth Proportional to 643,878.62, 965,226.62 and 222,860.06

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Solution

The fourth proportional to 643,878.62, 965,226.62 and 222,860.06 is: 334,085.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,878.62 : 965,226.62 = 222,860.06 : x
  2. Step 2: Convert to fraction form
    643,878.62/965,226.62 = 222,860.06/x
  3. Step 3: Cross multiply
    643,878.62x = 965,226.62 × 222,860.06
  4. Step 4: Simplify right side
    643,878.62x = 215,110,462,446.80
  5. Step 5: Solve for x
    x = 215,110,462,446.80/643,878.62
  6. Step 6: Final answer
    x = 334,085.43

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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.