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Finding the Fourth Proportional to 288,115.94, 397,621.98 and 159,079.29

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Solution

The fourth proportional to 288,115.94, 397,621.98 and 159,079.29 is: 219,541.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,115.94 : 397,621.98 = 159,079.29 : x
  2. Step 2: Convert to fraction form
    288,115.94/397,621.98 = 159,079.29/x
  3. Step 3: Cross multiply
    288,115.94x = 397,621.98 × 159,079.29
  4. Step 4: Simplify right side
    288,115.94x = 63,253,422,266.79
  5. Step 5: Solve for x
    x = 63,253,422,266.79/288,115.94
  6. Step 6: Final answer
    x = 219,541.56

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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.