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Finding the Fourth Proportional to 263,482.64, 395,286.84 and 85,989.98

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Solution

The fourth proportional to 263,482.64, 395,286.84 and 85,989.98 is: 129,005.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,482.64 : 395,286.84 = 85,989.98 : x
  2. Step 2: Convert to fraction form
    263,482.64/395,286.84 = 85,989.98/x
  3. Step 3: Cross multiply
    263,482.64x = 395,286.84 × 85,989.98
  4. Step 4: Simplify right side
    263,482.64x = 33,990,707,465.86
  5. Step 5: Solve for x
    x = 33,990,707,465.86/263,482.64
  6. Step 6: Final answer
    x = 129,005.49

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1.5x scale

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.