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Finding the Fourth Proportional to 351,712.52, 485,356.88 and 198,747.39

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Solution

The fourth proportional to 351,712.52, 485,356.88 and 198,747.39 is: 274,267.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,712.52 : 485,356.88 = 198,747.39 : x
  2. Step 2: Convert to fraction form
    351,712.52/485,356.88 = 198,747.39/x
  3. Step 3: Cross multiply
    351,712.52x = 485,356.88 × 198,747.39
  4. Step 4: Simplify right side
    351,712.52x = 96,463,412,124.81
  5. Step 5: Solve for x
    x = 96,463,412,124.81/351,712.52
  6. Step 6: Final answer
    x = 274,267.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.