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Finding the Fourth Proportional to 407,993.22, 612,093.63 and 239,655.90

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Solution

The fourth proportional to 407,993.22, 612,093.63 and 239,655.90 is: 359,544.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,993.22 : 612,093.63 = 239,655.90 : x
  2. Step 2: Convert to fraction form
    407,993.22/612,093.63 = 239,655.90/x
  3. Step 3: Cross multiply
    407,993.22x = 612,093.63 × 239,655.90
  4. Step 4: Simplify right side
    407,993.22x = 146,691,851,272.68
  5. Step 5: Solve for x
    x = 146,691,851,272.68/407,993.22
  6. Step 6: Final answer
    x = 359,544.82

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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.