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Finding the Fourth Proportional to 354,593.58, 489,336.82 and 201,631.78

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Solution

The fourth proportional to 354,593.58, 489,336.82 and 201,631.78 is: 278,250.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,593.58 : 489,336.82 = 201,631.78 : x
  2. Step 2: Convert to fraction form
    354,593.58/489,336.82 = 201,631.78/x
  3. Step 3: Cross multiply
    354,593.58x = 489,336.82 × 201,631.78
  4. Step 4: Simplify right side
    354,593.58x = 98,665,854,755.40
  5. Step 5: Solve for x
    x = 98,665,854,755.40/354,593.58
  6. Step 6: Final answer
    x = 278,250.54

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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.