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Finding the Fourth Proportional to 198,994,720.80, 298,492,081.20 and 60,820,060.80

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Solution

The fourth proportional to 198,994,720.80, 298,492,081.20 and 60,820,060.80 is: 91,230,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,994,720.80 : 298,492,081.20 = 60,820,060.80 : x
  2. Step 2: Convert to fraction form
    198,994,720.80/298,492,081.20 = 60,820,060.80/x
  3. Step 3: Cross multiply
    198,994,720.80x = 298,492,081.20 × 60,820,060.80
  4. Step 4: Simplify right side
    198,994,720.80x = 18,154,306,526,902,536
  5. Step 5: Solve for x
    x = 18,154,306,526,902,536/198,994,720.80
  6. Step 6: Final answer
    x = 91,230,091.20

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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.