Home / 214,631.80-321,990.90-74,361.40

Finding the Fourth Proportional to 214,631.80, 321,990.90 and 74,361.40

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Solution

The fourth proportional to 214,631.80, 321,990.90 and 74,361.40 is: 111,557.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,631.80 : 321,990.90 = 74,361.40 : x
  2. Step 2: Convert to fraction form
    214,631.80/321,990.90 = 74,361.40/x
  3. Step 3: Cross multiply
    214,631.80x = 321,990.90 × 74,361.40
  4. Step 4: Simplify right side
    214,631.80x = 23,943,694,111.26
  5. Step 5: Solve for x
    x = 23,943,694,111.26/214,631.80
  6. Step 6: Final answer
    x = 111,557.07

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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.