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Finding the Fourth Proportional to 206,021.55, 309,080.24 and 63,859.28

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Solution

The fourth proportional to 206,021.55, 309,080.24 and 63,859.28 is: 95,803.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,021.55 : 309,080.24 = 63,859.28 : x
  2. Step 2: Convert to fraction form
    206,021.55/309,080.24 = 63,859.28/x
  3. Step 3: Cross multiply
    206,021.55x = 309,080.24 × 63,859.28
  4. Step 4: Simplify right side
    206,021.55x = 19,737,641,588.63
  5. Step 5: Solve for x
    x = 19,737,641,588.63/206,021.55
  6. Step 6: Final answer
    x = 95,803.77

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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.