Home / 278,961.10-385,151.69-214,315.20

Finding the Fourth Proportional to 278,961.10, 385,151.69 and 214,315.20

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Solution

The fourth proportional to 278,961.10, 385,151.69 and 214,315.20 is: 295,897.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,961.10 : 385,151.69 = 214,315.20 : x
  2. Step 2: Convert to fraction form
    278,961.10/385,151.69 = 214,315.20/x
  3. Step 3: Cross multiply
    278,961.10x = 385,151.69 × 214,315.20
  4. Step 4: Simplify right side
    278,961.10x = 82,543,861,472.69
  5. Step 5: Solve for x
    x = 82,543,861,472.69/278,961.10
  6. Step 6: Final answer
    x = 295,897.39

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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.