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Finding the Fourth Proportional to 379,537.70, 569,406.35 and 136,403.33

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Solution

The fourth proportional to 379,537.70, 569,406.35 and 136,403.33 is: 204,640.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,537.70 : 569,406.35 = 136,403.33 : x
  2. Step 2: Convert to fraction form
    379,537.70/569,406.35 = 136,403.33/x
  3. Step 3: Cross multiply
    379,537.70x = 569,406.35 × 136,403.33
  4. Step 4: Simplify right side
    379,537.70x = 77,668,919,757.12
  5. Step 5: Solve for x
    x = 77,668,919,757.12/379,537.70
  6. Step 6: Final answer
    x = 204,640.86

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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.