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Finding the Fourth Proportional to 206,919.40, 310,335.90 and 88,594.60

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Solution

The fourth proportional to 206,919.40, 310,335.90 and 88,594.60 is: 132,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,919.40 : 310,335.90 = 88,594.60 : x
  2. Step 2: Convert to fraction form
    206,919.40/310,335.90 = 88,594.60/x
  3. Step 3: Cross multiply
    206,919.40x = 310,335.90 × 88,594.60
  4. Step 4: Simplify right side
    206,919.40x = 27,494,084,926.14
  5. Step 5: Solve for x
    x = 27,494,084,926.14/206,919.40
  6. Step 6: Final answer
    x = 132,873.40

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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.