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Finding the Fourth Proportional to 206,020.55, 309,078.75 and 63,858.28

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Solution

The fourth proportional to 206,020.55, 309,078.75 and 63,858.28 is: 95,802.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,020.55 : 309,078.75 = 63,858.28 : x
  2. Step 2: Convert to fraction form
    206,020.55/309,078.75 = 63,858.28/x
  3. Step 3: Cross multiply
    206,020.55x = 309,078.75 × 63,858.28
  4. Step 4: Simplify right side
    206,020.55x = 19,737,237,040.26
  5. Step 5: Solve for x
    x = 19,737,237,040.26/206,020.55
  6. Step 6: Final answer
    x = 95,802.28

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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.