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Finding the Fourth Proportional to 263,655.96, 395,480.64 and 63,978

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Solution

The fourth proportional to 263,655.96, 395,480.64 and 63,978 is: 95,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,655.96 : 395,480.64 = 63,978 : x
  2. Step 2: Convert to fraction form
    263,655.96/395,480.64 = 63,978/x
  3. Step 3: Cross multiply
    263,655.96x = 395,480.64 × 63,978
  4. Step 4: Simplify right side
    263,655.96x = 25,302,060,385.92
  5. Step 5: Solve for x
    x = 25,302,060,385.92/263,655.96
  6. Step 6: Final answer
    x = 95,966.20

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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.