Home / 205,425.40-308,138.10-72,304.60

Finding the Fourth Proportional to 205,425.40, 308,138.10 and 72,304.60

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Solution

The fourth proportional to 205,425.40, 308,138.10 and 72,304.60 is: 108,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,425.40 : 308,138.10 = 72,304.60 : x
  2. Step 2: Convert to fraction form
    205,425.40/308,138.10 = 72,304.60/x
  3. Step 3: Cross multiply
    205,425.40x = 308,138.10 × 72,304.60
  4. Step 4: Simplify right side
    205,425.40x = 22,279,802,065.26
  5. Step 5: Solve for x
    x = 22,279,802,065.26/205,425.40
  6. Step 6: Final answer
    x = 108,456.90

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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.