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Finding the Fourth Proportional to 286,808.69, 395,796.32 and 159,481.55

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Solution

The fourth proportional to 286,808.69, 395,796.32 and 159,481.55 is: 220,084.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,808.69 : 395,796.32 = 159,481.55 : x
  2. Step 2: Convert to fraction form
    286,808.69/395,796.32 = 159,481.55/x
  3. Step 3: Cross multiply
    286,808.69x = 395,796.32 × 159,481.55
  4. Step 4: Simplify right side
    286,808.69x = 63,122,209,161.68
  5. Step 5: Solve for x
    x = 63,122,209,161.68/286,808.69
  6. Step 6: Final answer
    x = 220,084.72

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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.