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Finding the Fourth Proportional to 392,485.80, 588,728.70 and 96,997.80

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Solution

The fourth proportional to 392,485.80, 588,728.70 and 96,997.80 is: 145,496.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,485.80 : 588,728.70 = 96,997.80 : x
  2. Step 2: Convert to fraction form
    392,485.80/588,728.70 = 96,997.80/x
  3. Step 3: Cross multiply
    392,485.80x = 588,728.70 × 96,997.80
  4. Step 4: Simplify right side
    392,485.80x = 57,105,388,696.86
  5. Step 5: Solve for x
    x = 57,105,388,696.86/392,485.80
  6. Step 6: Final answer
    x = 145,496.70

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Similar ratio
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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.