Home / 379,921.68-569,380.24-199,638.76

Finding the Fourth Proportional to 379,921.68, 569,380.24 and 199,638.76

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Solution

The fourth proportional to 379,921.68, 569,380.24 and 199,638.76 is: 299,194.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,921.68 : 569,380.24 = 199,638.76 : x
  2. Step 2: Convert to fraction form
    379,921.68/569,380.24 = 199,638.76/x
  3. Step 3: Cross multiply
    379,921.68x = 569,380.24 × 199,638.76
  4. Step 4: Simplify right side
    379,921.68x = 113,670,365,082.10
  5. Step 5: Solve for x
    x = 113,670,365,082.10/379,921.68
  6. Step 6: Final answer
    x = 299,194.21

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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.