Home / 289,225.14-399,028.05-188,448.18

Finding the Fourth Proportional to 289,225.14, 399,028.05 and 188,448.18

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Solution

The fourth proportional to 289,225.14, 399,028.05 and 188,448.18 is: 259,991.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,225.14 : 399,028.05 = 188,448.18 : x
  2. Step 2: Convert to fraction form
    289,225.14/399,028.05 = 188,448.18/x
  3. Step 3: Cross multiply
    289,225.14x = 399,028.05 × 188,448.18
  4. Step 4: Simplify right side
    289,225.14x = 75,196,109,791.45
  5. Step 5: Solve for x
    x = 75,196,109,791.45/289,225.14
  6. Step 6: Final answer
    x = 259,991.61

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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.