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Finding the Fourth Proportional to 505,161.74, 757,740.78 and 131,184.74

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Solution

The fourth proportional to 505,161.74, 757,740.78 and 131,184.74 is: 196,776.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,161.74 : 757,740.78 = 131,184.74 : x
  2. Step 2: Convert to fraction form
    505,161.74/757,740.78 = 131,184.74/x
  3. Step 3: Cross multiply
    505,161.74x = 757,740.78 × 131,184.74
  4. Step 4: Simplify right side
    505,161.74x = 99,404,023,422.99
  5. Step 5: Solve for x
    x = 99,404,023,422.99/505,161.74
  6. Step 6: Final answer
    x = 196,776.63

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Similar ratio
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1.5x scale

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.