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Finding the Fourth Proportional to 286,809.72, 395,781.15 and 159,482.58

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Solution

The fourth proportional to 286,809.72, 395,781.15 and 159,482.58 is: 220,076.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,809.72 : 395,781.15 = 159,482.58 : x
  2. Step 2: Convert to fraction form
    286,809.72/395,781.15 = 159,482.58/x
  3. Step 3: Cross multiply
    286,809.72x = 395,781.15 × 159,482.58
  4. Step 4: Simplify right side
    286,809.72x = 63,120,198,917.37
  5. Step 5: Solve for x
    x = 63,120,198,917.37/286,809.72
  6. Step 6: Final answer
    x = 220,076.92

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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.