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Finding the Fourth Proportional to 322,190.55, 483,248.79 and 85,551.75

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Solution

The fourth proportional to 322,190.55, 483,248.79 and 85,551.75 is: 128,317.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,190.55 : 483,248.79 = 85,551.75 : x
  2. Step 2: Convert to fraction form
    322,190.55/483,248.79 = 85,551.75/x
  3. Step 3: Cross multiply
    322,190.55x = 483,248.79 × 85,551.75
  4. Step 4: Simplify right side
    322,190.55x = 41,342,779,669.88
  5. Step 5: Solve for x
    x = 41,342,779,669.88/322,190.55
  6. Step 6: Final answer
    x = 128,317.79

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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.