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Finding the Fourth Proportional to 288,852, 398,608.30 and 159,787.11

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Solution

The fourth proportional to 288,852, 398,608.30 and 159,787.11 is: 220,502.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,852 : 398,608.30 = 159,787.11 : x
  2. Step 2: Convert to fraction form
    288,852/398,608.30 = 159,787.11/x
  3. Step 3: Cross multiply
    288,852x = 398,608.30 × 159,787.11
  4. Step 4: Simplify right side
    288,852x = 63,692,468,279.01
  5. Step 5: Solve for x
    x = 63,692,468,279.01/288,852
  6. Step 6: Final answer
    x = 220,502.09

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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.