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Finding the Fourth Proportional to 329,795,189.60, 494,566,813.20 and 99,687,797.60

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Solution

The fourth proportional to 329,795,189.60, 494,566,813.20 and 99,687,797.60 is: 149,493,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,795,189.60 : 494,566,813.20 = 99,687,797.60 : x
  2. Step 2: Convert to fraction form
    329,795,189.60/494,566,813.20 = 99,687,797.60/x
  3. Step 3: Cross multiply
    329,795,189.60x = 494,566,813.20 × 99,687,797.60
  4. Step 4: Simplify right side
    329,795,189.60x = 49,302,276,373,958,608
  5. Step 5: Solve for x
    x = 49,302,276,373,958,608/329,795,189.60
  6. Step 6: Final answer
    x = 149,493,618.85

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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.