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Finding the Fourth Proportional to 379,107.81, 568,650.75 and 154,412.66

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Solution

The fourth proportional to 379,107.81, 568,650.75 and 154,412.66 is: 231,614.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,107.81 : 568,650.75 = 154,412.66 : x
  2. Step 2: Convert to fraction form
    379,107.81/568,650.75 = 154,412.66/x
  3. Step 3: Cross multiply
    379,107.81x = 568,650.75 × 154,412.66
  4. Step 4: Simplify right side
    379,107.81x = 87,806,875,761.07
  5. Step 5: Solve for x
    x = 87,806,875,761.07/379,107.81
  6. Step 6: Final answer
    x = 231,614.53

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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.