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Finding the Fourth Proportional to 206,886.90, 310,330.35 and 88,788.90

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Solution

The fourth proportional to 206,886.90, 310,330.35 and 88,788.90 is: 133,183.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,886.90 : 310,330.35 = 88,788.90 : x
  2. Step 2: Convert to fraction form
    206,886.90/310,330.35 = 88,788.90/x
  3. Step 3: Cross multiply
    206,886.90x = 310,330.35 × 88,788.90
  4. Step 4: Simplify right side
    206,886.90x = 27,553,890,413.12
  5. Step 5: Solve for x
    x = 27,553,890,413.12/206,886.90
  6. Step 6: Final answer
    x = 133,183.35

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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.