Home / 221,039.42-331,623.83-71,276.70

Finding the Fourth Proportional to 221,039.42, 331,623.83 and 71,276.70

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Solution

The fourth proportional to 221,039.42, 331,623.83 and 71,276.70 is: 106,935.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,039.42 : 331,623.83 = 71,276.70 : x
  2. Step 2: Convert to fraction form
    221,039.42/331,623.83 = 71,276.70/x
  3. Step 3: Cross multiply
    221,039.42x = 331,623.83 × 71,276.70
  4. Step 4: Simplify right side
    221,039.42x = 23,637,051,887.38
  5. Step 5: Solve for x
    x = 23,637,051,887.38/221,039.42
  6. Step 6: Final answer
    x = 106,935.91

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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.