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Finding the Fourth Proportional to 206,144.88, 309,261.42 and 63,987.05

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Solution

The fourth proportional to 206,144.88, 309,261.42 and 63,987.05 is: 95,994.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,144.88 : 309,261.42 = 63,987.05 : x
  2. Step 2: Convert to fraction form
    206,144.88/309,261.42 = 63,987.05/x
  3. Step 3: Cross multiply
    206,144.88x = 309,261.42 × 63,987.05
  4. Step 4: Simplify right side
    206,144.88x = 19,788,725,944.61
  5. Step 5: Solve for x
    x = 19,788,725,944.61/206,144.88
  6. Step 6: Final answer
    x = 95,994.26

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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.