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Finding the Fourth Proportional to 320,378.92, 480,766.02 and 162,720.52

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Solution

The fourth proportional to 320,378.92, 480,766.02 and 162,720.52 is: 244,181.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,378.92 : 480,766.02 = 162,720.52 : x
  2. Step 2: Convert to fraction form
    320,378.92/480,766.02 = 162,720.52/x
  3. Step 3: Cross multiply
    320,378.92x = 480,766.02 × 162,720.52
  4. Step 4: Simplify right side
    320,378.92x = 78,230,496,772.73
  5. Step 5: Solve for x
    x = 78,230,496,772.73/320,378.92
  6. Step 6: Final answer
    x = 244,181.16

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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.