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Finding the Fourth Proportional to 396,777.86, 547,640.63 and 260,824.37

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Solution

The fourth proportional to 396,777.86, 547,640.63 and 260,824.37 is: 359,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,777.86 : 547,640.63 = 260,824.37 : x
  2. Step 2: Convert to fraction form
    396,777.86/547,640.63 = 260,824.37/x
  3. Step 3: Cross multiply
    396,777.86x = 547,640.63 × 260,824.37
  4. Step 4: Simplify right side
    396,777.86x = 142,838,019,241.92
  5. Step 5: Solve for x
    x = 142,838,019,241.92/396,777.86
  6. Step 6: Final answer
    x = 359,994.93

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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.