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Finding the Fourth Proportional to 215,605.82, 323,401.44 and 65,840.06

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Solution

The fourth proportional to 215,605.82, 323,401.44 and 65,840.06 is: 98,757.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,605.82 : 323,401.44 = 65,840.06 : x
  2. Step 2: Convert to fraction form
    215,605.82/323,401.44 = 65,840.06/x
  3. Step 3: Cross multiply
    215,605.82x = 323,401.44 × 65,840.06
  4. Step 4: Simplify right side
    215,605.82x = 21,292,770,213.69
  5. Step 5: Solve for x
    x = 21,292,770,213.69/215,605.82
  6. Step 6: Final answer
    x = 98,757.86

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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.