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Finding the Fourth Proportional to 226,878, 340,237.50 and 66,911.43

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Solution

The fourth proportional to 226,878, 340,237.50 and 66,911.43 is: 100,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,878 : 340,237.50 = 66,911.43 : x
  2. Step 2: Convert to fraction form
    226,878/340,237.50 = 66,911.43/x
  3. Step 3: Cross multiply
    226,878x = 340,237.50 × 66,911.43
  4. Step 4: Simplify right side
    226,878x = 22,765,777,664.63
  5. Step 5: Solve for x
    x = 22,765,777,664.63/226,878
  6. Step 6: Final answer
    x = 100,343.70

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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.