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Finding the Fourth Proportional to 356,245, 534,600.78 and 134,629

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Solution

The fourth proportional to 356,245, 534,600.78 and 134,629 is: 202,031.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,245 : 534,600.78 = 134,629 : x
  2. Step 2: Convert to fraction form
    356,245/534,600.78 = 134,629/x
  3. Step 3: Cross multiply
    356,245x = 534,600.78 × 134,629
  4. Step 4: Simplify right side
    356,245x = 71,972,768,410.62
  5. Step 5: Solve for x
    x = 71,972,768,410.62/356,245
  6. Step 6: Final answer
    x = 202,031.66

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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.