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Finding the Fourth Proportional to 225,590.09, 311,314.28 and 134,949.87

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Solution

The fourth proportional to 225,590.09, 311,314.28 and 134,949.87 is: 186,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,590.09 : 311,314.28 = 134,949.87 : x
  2. Step 2: Convert to fraction form
    225,590.09/311,314.28 = 134,949.87/x
  3. Step 3: Cross multiply
    225,590.09x = 311,314.28 × 134,949.87
  4. Step 4: Simplify right side
    225,590.09x = 42,011,820,940.39
  5. Step 5: Solve for x
    x = 42,011,820,940.39/225,590.09
  6. Step 6: Final answer
    x = 186,230.80

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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.