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Finding the Fourth Proportional to 206,589.75, 310,015.71 and 88,261.98

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Solution

The fourth proportional to 206,589.75, 310,015.71 and 88,261.98 is: 132,448.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,589.75 : 310,015.71 = 88,261.98 : x
  2. Step 2: Convert to fraction form
    206,589.75/310,015.71 = 88,261.98/x
  3. Step 3: Cross multiply
    206,589.75x = 310,015.71 × 88,261.98
  4. Step 4: Simplify right side
    206,589.75x = 27,362,600,395.71
  5. Step 5: Solve for x
    x = 27,362,600,395.71/206,589.75
  6. Step 6: Final answer
    x = 132,448.97

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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.