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Finding the Fourth Proportional to 329,669,793.60, 494,504,690.40 and 135,720,400.65

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Solution

The fourth proportional to 329,669,793.60, 494,504,690.40 and 135,720,400.65 is: 203,580,600.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,669,793.60 : 494,504,690.40 = 135,720,400.65 : x
  2. Step 2: Convert to fraction form
    329,669,793.60/494,504,690.40 = 135,720,400.65/x
  3. Step 3: Cross multiply
    329,669,793.60x = 494,504,690.40 × 135,720,400.65
  4. Step 4: Simplify right side
    329,669,793.60x = 67,114,374,704,392,208
  5. Step 5: Solve for x
    x = 67,114,374,704,392,208/329,669,793.60
  6. Step 6: Final answer
    x = 203,580,600.98

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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.