Home / 414,221.58-621,333.81-126,036

Finding the Fourth Proportional to 414,221.58, 621,333.81 and 126,036

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Solution

The fourth proportional to 414,221.58, 621,333.81 and 126,036 is: 189,054.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,221.58 : 621,333.81 = 126,036 : x
  2. Step 2: Convert to fraction form
    414,221.58/621,333.81 = 126,036/x
  3. Step 3: Cross multiply
    414,221.58x = 621,333.81 × 126,036
  4. Step 4: Simplify right side
    414,221.58x = 78,310,428,077.16
  5. Step 5: Solve for x
    x = 78,310,428,077.16/414,221.58
  6. Step 6: Final answer
    x = 189,054.44

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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.