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Finding the Fourth Proportional to 379,568.20, 569,352.30 and 239,945.80

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Solution

The fourth proportional to 379,568.20, 569,352.30 and 239,945.80 is: 359,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,568.20 : 569,352.30 = 239,945.80 : x
  2. Step 2: Convert to fraction form
    379,568.20/569,352.30 = 239,945.80/x
  3. Step 3: Cross multiply
    379,568.20x = 569,352.30 × 239,945.80
  4. Step 4: Simplify right side
    379,568.20x = 136,613,693,105.34
  5. Step 5: Solve for x
    x = 136,613,693,105.34/379,568.20
  6. Step 6: Final answer
    x = 359,918.70

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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.