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Finding the Fourth Proportional to 439,485, 658,836.54 and 158,939.88

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Solution

The fourth proportional to 439,485, 658,836.54 and 158,939.88 is: 238,268.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,485 : 658,836.54 = 158,939.88 : x
  2. Step 2: Convert to fraction form
    439,485/658,836.54 = 158,939.88/x
  3. Step 3: Cross multiply
    439,485x = 658,836.54 × 158,939.88
  4. Step 4: Simplify right side
    439,485x = 104,715,400,607.22
  5. Step 5: Solve for x
    x = 104,715,400,607.22/439,485
  6. Step 6: Final answer
    x = 238,268.43

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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.