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Finding the Fourth Proportional to 266,419.76, 399,787.25 and 98,058.33

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Solution

The fourth proportional to 266,419.76, 399,787.25 and 98,058.33 is: 147,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,419.76 : 399,787.25 = 98,058.33 : x
  2. Step 2: Convert to fraction form
    266,419.76/399,787.25 = 98,058.33/x
  3. Step 3: Cross multiply
    266,419.76x = 399,787.25 × 98,058.33
  4. Step 4: Simplify right side
    266,419.76x = 39,202,469,600.00
  5. Step 5: Solve for x
    x = 39,202,469,600.00/266,419.76
  6. Step 6: Final answer
    x = 147,145.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.