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Finding the Fourth Proportional to 206,020.80, 309,079.12 and 63,858.53

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Solution

The fourth proportional to 206,020.80, 309,079.12 and 63,858.53 is: 95,802.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,020.80 : 309,079.12 = 63,858.53 : x
  2. Step 2: Convert to fraction form
    206,020.80/309,079.12 = 63,858.53/x
  3. Step 3: Cross multiply
    206,020.80x = 309,079.12 × 63,858.53
  4. Step 4: Simplify right side
    206,020.80x = 19,737,338,256.89
  5. Step 5: Solve for x
    x = 19,737,338,256.89/206,020.80
  6. Step 6: Final answer
    x = 95,802.65

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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.