Home / 218,721.87-328,286.93-112,185.81

Finding the Fourth Proportional to 218,721.87, 328,286.93 and 112,185.81

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Solution

The fourth proportional to 218,721.87, 328,286.93 and 112,185.81 is: 168,383.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,721.87 : 328,286.93 = 112,185.81 : x
  2. Step 2: Convert to fraction form
    218,721.87/328,286.93 = 112,185.81/x
  3. Step 3: Cross multiply
    218,721.87x = 328,286.93 × 112,185.81
  4. Step 4: Simplify right side
    218,721.87x = 36,829,134,593.53
  5. Step 5: Solve for x
    x = 36,829,134,593.53/218,721.87
  6. Step 6: Final answer
    x = 168,383.41

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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.