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Finding the Fourth Proportional to 288,043.06, 397,469.27 and 158,979.15

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Solution

The fourth proportional to 288,043.06, 397,469.27 and 158,979.15 is: 219,374.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,043.06 : 397,469.27 = 158,979.15 : x
  2. Step 2: Convert to fraction form
    288,043.06/397,469.27 = 158,979.15/x
  3. Step 3: Cross multiply
    288,043.06x = 397,469.27 × 158,979.15
  4. Step 4: Simplify right side
    288,043.06x = 63,189,327,093.17
  5. Step 5: Solve for x
    x = 63,189,327,093.17/288,043.06
  6. Step 6: Final answer
    x = 219,374.59

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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.