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Finding the Fourth Proportional to 505,572.48, 758,500.48 and 221,287.84

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Solution

The fourth proportional to 505,572.48, 758,500.48 and 221,287.84 is: 331,993.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,572.48 : 758,500.48 = 221,287.84 : x
  2. Step 2: Convert to fraction form
    505,572.48/758,500.48 = 221,287.84/x
  3. Step 3: Cross multiply
    505,572.48x = 758,500.48 × 221,287.84
  4. Step 4: Simplify right side
    505,572.48x = 167,846,932,858.16
  5. Step 5: Solve for x
    x = 167,846,932,858.16/505,572.48
  6. Step 6: Final answer
    x = 331,993.81

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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.