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Finding the Fourth Proportional to 225,996.18, 311,841.99 and 145,532.76

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Solution

The fourth proportional to 225,996.18, 311,841.99 and 145,532.76 is: 200,814.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,996.18 : 311,841.99 = 145,532.76 : x
  2. Step 2: Convert to fraction form
    225,996.18/311,841.99 = 145,532.76/x
  3. Step 3: Cross multiply
    225,996.18x = 311,841.99 × 145,532.76
  4. Step 4: Simplify right side
    225,996.18x = 45,383,225,488.59
  5. Step 5: Solve for x
    x = 45,383,225,488.59/225,996.18
  6. Step 6: Final answer
    x = 200,814.13

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1.5x scale

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.