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Finding the Fourth Proportional to 286,778.70, 395,753.31 and 159,446.70

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Solution

The fourth proportional to 286,778.70, 395,753.31 and 159,446.70 is: 220,035.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,778.70 : 395,753.31 = 159,446.70 : x
  2. Step 2: Convert to fraction form
    286,778.70/395,753.31 = 159,446.70/x
  3. Step 3: Cross multiply
    286,778.70x = 395,753.31 × 159,446.70
  4. Step 4: Simplify right side
    286,778.70x = 63,101,559,293.58
  5. Step 5: Solve for x
    x = 63,101,559,293.58/286,778.70
  6. Step 6: Final answer
    x = 220,035.73

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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.