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Finding the Fourth Proportional to 234,012.68, 351,018.72 and 76,240.88

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Solution

The fourth proportional to 234,012.68, 351,018.72 and 76,240.88 is: 114,361.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,012.68 : 351,018.72 = 76,240.88 : x
  2. Step 2: Convert to fraction form
    234,012.68/351,018.72 = 76,240.88/x
  3. Step 3: Cross multiply
    234,012.68x = 351,018.72 × 76,240.88
  4. Step 4: Simplify right side
    234,012.68x = 26,761,976,109.27
  5. Step 5: Solve for x
    x = 26,761,976,109.27/234,012.68
  6. Step 6: Final answer
    x = 114,361.22

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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.