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Finding the Fourth Proportional to 439,425.68, 605,970.80 and 330,790.16

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Solution

The fourth proportional to 439,425.68, 605,970.80 and 330,790.16 is: 456,161.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,425.68 : 605,970.80 = 330,790.16 : x
  2. Step 2: Convert to fraction form
    439,425.68/605,970.80 = 330,790.16/x
  3. Step 3: Cross multiply
    439,425.68x = 605,970.80 × 330,790.16
  4. Step 4: Simplify right side
    439,425.68x = 200,449,177,887.33
  5. Step 5: Solve for x
    x = 200,449,177,887.33/439,425.68
  6. Step 6: Final answer
    x = 456,161.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.