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Finding the Fourth Proportional to 206,693.55, 310,040.33 and 66,466.35

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Solution

The fourth proportional to 206,693.55, 310,040.33 and 66,466.35 is: 99,699.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,693.55 : 310,040.33 = 66,466.35 : x
  2. Step 2: Convert to fraction form
    206,693.55/310,040.33 = 66,466.35/x
  3. Step 3: Cross multiply
    206,693.55x = 310,040.33 × 66,466.35
  4. Step 4: Simplify right side
    206,693.55x = 20,607,248,755.56
  5. Step 5: Solve for x
    x = 20,607,248,755.56/206,693.55
  6. Step 6: Final answer
    x = 99,699.53

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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.