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Finding the Fourth Proportional to 206,871.47, 310,307.22 and 66,630.09

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Solution

The fourth proportional to 206,871.47, 310,307.22 and 66,630.09 is: 99,945.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,871.47 : 310,307.22 = 66,630.09 : x
  2. Step 2: Convert to fraction form
    206,871.47/310,307.22 = 66,630.09/x
  3. Step 3: Cross multiply
    206,871.47x = 310,307.22 × 66,630.09
  4. Step 4: Simplify right side
    206,871.47x = 20,675,799,159.90
  5. Step 5: Solve for x
    x = 20,675,799,159.90/206,871.47
  6. Step 6: Final answer
    x = 99,945.15

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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.