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Finding the Fourth Proportional to 215,327.97, 323,008.43 and 65,581.02

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Solution

The fourth proportional to 215,327.97, 323,008.43 and 65,581.02 is: 98,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,327.97 : 323,008.43 = 65,581.02 : x
  2. Step 2: Convert to fraction form
    215,327.97/323,008.43 = 65,581.02/x
  3. Step 3: Cross multiply
    215,327.97x = 323,008.43 × 65,581.02
  4. Step 4: Simplify right side
    215,327.97x = 21,183,221,980.09
  5. Step 5: Solve for x
    x = 21,183,221,980.09/215,327.97
  6. Step 6: Final answer
    x = 98,376.55

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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.