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Finding the Fourth Proportional to 402,793.62, 604,190.48 and 191,791.86

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Solution

The fourth proportional to 402,793.62, 604,190.48 and 191,791.86 is: 287,687.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,793.62 : 604,190.48 = 191,791.86 : x
  2. Step 2: Convert to fraction form
    402,793.62/604,190.48 = 191,791.86/x
  3. Step 3: Cross multiply
    402,793.62x = 604,190.48 × 191,791.86
  4. Step 4: Simplify right side
    402,793.62x = 115,878,814,994.53
  5. Step 5: Solve for x
    x = 115,878,814,994.53/402,793.62
  6. Step 6: Final answer
    x = 287,687.81

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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.