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Finding the Fourth Proportional to 505,760.06, 758,128.90 and 217,759.56

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Solution

The fourth proportional to 505,760.06, 758,128.90 and 217,759.56 is: 326,419.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,760.06 : 758,128.90 = 217,759.56 : x
  2. Step 2: Convert to fraction form
    505,760.06/758,128.90 = 217,759.56/x
  3. Step 3: Cross multiply
    505,760.06x = 758,128.90 × 217,759.56
  4. Step 4: Simplify right side
    505,760.06x = 165,089,811,352.24
  5. Step 5: Solve for x
    x = 165,089,811,352.24/505,760.06
  6. Step 6: Final answer
    x = 326,419.24

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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.