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Finding the Fourth Proportional to 234,136.80, 351,169.92 and 76,364.64

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Solution

The fourth proportional to 234,136.80, 351,169.92 and 76,364.64 is: 114,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,136.80 : 351,169.92 = 76,364.64 : x
  2. Step 2: Convert to fraction form
    234,136.80/351,169.92 = 76,364.64/x
  3. Step 3: Cross multiply
    234,136.80x = 351,169.92 × 76,364.64
  4. Step 4: Simplify right side
    234,136.80x = 26,816,964,519.63
  5. Step 5: Solve for x
    x = 26,816,964,519.63/234,136.80
  6. Step 6: Final answer
    x = 114,535.45

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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.