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Finding the Fourth Proportional to 379,057, 568,588.38 and 129,741.16

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Solution

The fourth proportional to 379,057, 568,588.38 and 129,741.16 is: 194,612.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,057 : 568,588.38 = 129,741.16 : x
  2. Step 2: Convert to fraction form
    379,057/568,588.38 = 129,741.16/x
  3. Step 3: Cross multiply
    379,057x = 568,588.38 × 129,741.16
  4. Step 4: Simplify right side
    379,057x = 73,769,315,983.72
  5. Step 5: Solve for x
    x = 73,769,315,983.72/379,057
  6. Step 6: Final answer
    x = 194,612.73

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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.