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Finding the Fourth Proportional to 263,978.76, 364,286.88 and 143,117.76

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Solution

The fourth proportional to 263,978.76, 364,286.88 and 143,117.76 is: 197,500.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,978.76 : 364,286.88 = 143,117.76 : x
  2. Step 2: Convert to fraction form
    263,978.76/364,286.88 = 143,117.76/x
  3. Step 3: Cross multiply
    263,978.76x = 364,286.88 × 143,117.76
  4. Step 4: Simplify right side
    263,978.76x = 52,135,922,262.99
  5. Step 5: Solve for x
    x = 52,135,922,262.99/263,978.76
  6. Step 6: Final answer
    x = 197,500.44

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1.5x scale

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.