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Finding the Fourth Proportional to 206,906.90, 310,360.35 and 88,590.20

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Solution

The fourth proportional to 206,906.90, 310,360.35 and 88,590.20 is: 132,885.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,906.90 : 310,360.35 = 88,590.20 : x
  2. Step 2: Convert to fraction form
    206,906.90/310,360.35 = 88,590.20/x
  3. Step 3: Cross multiply
    206,906.90x = 310,360.35 × 88,590.20
  4. Step 4: Simplify right side
    206,906.90x = 27,494,885,478.57
  5. Step 5: Solve for x
    x = 27,494,885,478.57/206,906.90
  6. Step 6: Final answer
    x = 132,885.30

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1.5x scale

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.