Home / 311,948.70-468,085.05-145,736.70

Finding the Fourth Proportional to 311,948.70, 468,085.05 and 145,736.70

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Solution

The fourth proportional to 311,948.70, 468,085.05 and 145,736.70 is: 218,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,948.70 : 468,085.05 = 145,736.70 : x
  2. Step 2: Convert to fraction form
    311,948.70/468,085.05 = 145,736.70/x
  3. Step 3: Cross multiply
    311,948.70x = 468,085.05 × 145,736.70
  4. Step 4: Simplify right side
    311,948.70x = 68,217,170,506.34
  5. Step 5: Solve for x
    x = 68,217,170,506.34/311,948.70
  6. Step 6: Final answer
    x = 218,680.73

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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.