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Finding the Fourth Proportional to 665,902.40, 998,983.20 and 192,603.20

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Solution

The fourth proportional to 665,902.40, 998,983.20 and 192,603.20 is: 288,942.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,902.40 : 998,983.20 = 192,603.20 : x
  2. Step 2: Convert to fraction form
    665,902.40/998,983.20 = 192,603.20/x
  3. Step 3: Cross multiply
    665,902.40x = 998,983.20 × 192,603.20
  4. Step 4: Simplify right side
    665,902.40x = 192,407,361,066.24
  5. Step 5: Solve for x
    x = 192,407,361,066.24/665,902.40
  6. Step 6: Final answer
    x = 288,942.29

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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.