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Finding the Fourth Proportional to 496,902.32, 685,741.90 and 279,149.20

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Solution

The fourth proportional to 496,902.32, 685,741.90 and 279,149.20 is: 385,235.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,902.32 : 685,741.90 = 279,149.20 : x
  2. Step 2: Convert to fraction form
    496,902.32/685,741.90 = 279,149.20/x
  3. Step 3: Cross multiply
    496,902.32x = 685,741.90 × 279,149.20
  4. Step 4: Simplify right side
    496,902.32x = 191,424,302,791.48
  5. Step 5: Solve for x
    x = 191,424,302,791.48/496,902.32
  6. Step 6: Final answer
    x = 385,235.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.