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Finding the Fourth Proportional to 414,911.60, 621,330.60 and 331,967.60

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Solution

The fourth proportional to 414,911.60, 621,330.60 and 331,967.60 is: 497,121.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,911.60 : 621,330.60 = 331,967.60 : x
  2. Step 2: Convert to fraction form
    414,911.60/621,330.60 = 331,967.60/x
  3. Step 3: Cross multiply
    414,911.60x = 621,330.60 × 331,967.60
  4. Step 4: Simplify right side
    414,911.60x = 206,261,628,088.56
  5. Step 5: Solve for x
    x = 206,261,628,088.56/414,911.60
  6. Step 6: Final answer
    x = 497,121.86

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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.