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Finding the Fourth Proportional to 393,874.75, 590,874.59 and 141,149.79

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Solution

The fourth proportional to 393,874.75, 590,874.59 and 141,149.79 is: 211,747.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,874.75 : 590,874.59 = 141,149.79 : x
  2. Step 2: Convert to fraction form
    393,874.75/590,874.59 = 141,149.79/x
  3. Step 3: Cross multiply
    393,874.75x = 590,874.59 × 141,149.79
  4. Step 4: Simplify right side
    393,874.75x = 83,401,821,340.46
  5. Step 5: Solve for x
    x = 83,401,821,340.46/393,874.75
  6. Step 6: Final answer
    x = 211,747.07

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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.