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Finding the Fourth Proportional to 286,808.64, 395,790.94 and 159,481.50

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Solution

The fourth proportional to 286,808.64, 395,790.94 and 159,481.50 is: 220,081.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,808.64 : 395,790.94 = 159,481.50 : x
  2. Step 2: Convert to fraction form
    286,808.64/395,790.94 = 159,481.50/x
  3. Step 3: Cross multiply
    286,808.64x = 395,790.94 × 159,481.50
  4. Step 4: Simplify right side
    286,808.64x = 63,121,332,797.61
  5. Step 5: Solve for x
    x = 63,121,332,797.61/286,808.64
  6. Step 6: Final answer
    x = 220,081.70

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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.