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Finding the Fourth Proportional to 320,158.92, 480,087.66 and 187,077.60

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Solution

The fourth proportional to 320,158.92, 480,087.66 and 187,077.60 is: 280,528.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,158.92 : 480,087.66 = 187,077.60 : x
  2. Step 2: Convert to fraction form
    320,158.92/480,087.66 = 187,077.60/x
  3. Step 3: Cross multiply
    320,158.92x = 480,087.66 × 187,077.60
  4. Step 4: Simplify right side
    320,158.92x = 89,813,647,222.42
  5. Step 5: Solve for x
    x = 89,813,647,222.42/320,158.92
  6. Step 6: Final answer
    x = 280,528.33

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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.