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Finding the Fourth Proportional to 379,930.91, 569,896.24 and 143,218.23

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Solution

The fourth proportional to 379,930.91, 569,896.24 and 143,218.23 is: 214,827.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,930.91 : 569,896.24 = 143,218.23 : x
  2. Step 2: Convert to fraction form
    379,930.91/569,896.24 = 143,218.23/x
  3. Step 3: Cross multiply
    379,930.91x = 569,896.24 × 143,218.23
  4. Step 4: Simplify right side
    379,930.91x = 81,619,529,154.03
  5. Step 5: Solve for x
    x = 81,619,529,154.03/379,930.91
  6. Step 6: Final answer
    x = 214,827.30

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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.