Home / 393,276.09-542,724.81-223,511.43

Finding the Fourth Proportional to 393,276.09, 542,724.81 and 223,511.43

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Solution

The fourth proportional to 393,276.09, 542,724.81 and 223,511.43 is: 308,447.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,276.09 : 542,724.81 = 223,511.43 : x
  2. Step 2: Convert to fraction form
    393,276.09/542,724.81 = 223,511.43/x
  3. Step 3: Cross multiply
    393,276.09x = 542,724.81 × 223,511.43
  4. Step 4: Simplify right side
    393,276.09x = 121,305,198,379.58
  5. Step 5: Solve for x
    x = 121,305,198,379.58/393,276.09
  6. Step 6: Final answer
    x = 308,447.94

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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.