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Finding the Fourth Proportional to 206,979.70, 310,469.55 and 59,235.70

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Solution

The fourth proportional to 206,979.70, 310,469.55 and 59,235.70 is: 88,853.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,979.70 : 310,469.55 = 59,235.70 : x
  2. Step 2: Convert to fraction form
    206,979.70/310,469.55 = 59,235.70/x
  3. Step 3: Cross multiply
    206,979.70x = 310,469.55 × 59,235.70
  4. Step 4: Simplify right side
    206,979.70x = 18,390,881,122.94
  5. Step 5: Solve for x
    x = 18,390,881,122.94/206,979.70
  6. Step 6: Final answer
    x = 88,853.55

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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.