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Finding the Fourth Proportional to 664,381.45, 996,575.60 and 165,745.45

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Solution

The fourth proportional to 664,381.45, 996,575.60 and 165,745.45 is: 248,619.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,381.45 : 996,575.60 = 165,745.45 : x
  2. Step 2: Convert to fraction form
    664,381.45/996,575.60 = 165,745.45/x
  3. Step 3: Cross multiply
    664,381.45x = 996,575.60 × 165,745.45
  4. Step 4: Simplify right side
    664,381.45x = 165,177,871,281.02
  5. Step 5: Solve for x
    x = 165,177,871,281.02/664,381.45
  6. Step 6: Final answer
    x = 248,619.03

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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.