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Finding the Fourth Proportional to 505,690.60, 758,579.34 and 131,713

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Solution

The fourth proportional to 505,690.60, 758,579.34 and 131,713 is: 197,580.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,690.60 : 758,579.34 = 131,713 : x
  2. Step 2: Convert to fraction form
    505,690.60/758,579.34 = 131,713/x
  3. Step 3: Cross multiply
    505,690.60x = 758,579.34 × 131,713
  4. Step 4: Simplify right side
    505,690.60x = 99,914,760,609.42
  5. Step 5: Solve for x
    x = 99,914,760,609.42/505,690.60
  6. Step 6: Final answer
    x = 197,580.81

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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.