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Finding the Fourth Proportional to 392,486.80, 588,730.20 and 96,998.80

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Solution

The fourth proportional to 392,486.80, 588,730.20 and 96,998.80 is: 145,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,486.80 : 588,730.20 = 96,998.80 : x
  2. Step 2: Convert to fraction form
    392,486.80/588,730.20 = 96,998.80/x
  3. Step 3: Cross multiply
    392,486.80x = 588,730.20 × 96,998.80
  4. Step 4: Simplify right side
    392,486.80x = 57,106,122,923.76
  5. Step 5: Solve for x
    x = 57,106,122,923.76/392,486.80
  6. Step 6: Final answer
    x = 145,498.20

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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.