Home / 321,255.96-442,619.52-212,166.56

Finding the Fourth Proportional to 321,255.96, 442,619.52 and 212,166.56

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Solution

The fourth proportional to 321,255.96, 442,619.52 and 212,166.56 is: 292,318.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,255.96 : 442,619.52 = 212,166.56 : x
  2. Step 2: Convert to fraction form
    321,255.96/442,619.52 = 212,166.56/x
  3. Step 3: Cross multiply
    321,255.96x = 442,619.52 × 212,166.56
  4. Step 4: Simplify right side
    321,255.96x = 93,909,060,947.25
  5. Step 5: Solve for x
    x = 93,909,060,947.25/321,255.96
  6. Step 6: Final answer
    x = 292,318.50

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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.