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Finding the Fourth Proportional to 393,636.88, 590,408.45 and 231,627.79

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Solution

The fourth proportional to 393,636.88, 590,408.45 and 231,627.79 is: 347,414.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,636.88 : 590,408.45 = 231,627.79 : x
  2. Step 2: Convert to fraction form
    393,636.88/590,408.45 = 231,627.79/x
  3. Step 3: Cross multiply
    393,636.88x = 590,408.45 × 231,627.79
  4. Step 4: Simplify right side
    393,636.88x = 136,755,000,360.64
  5. Step 5: Solve for x
    x = 136,755,000,360.64/393,636.88
  6. Step 6: Final answer
    x = 347,414.10

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1.5x scale

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.