Home / 299,638.20-449,975.70-194,921.40

Finding the Fourth Proportional to 299,638.20, 449,975.70 and 194,921.40

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Solution

The fourth proportional to 299,638.20, 449,975.70 and 194,921.40 is: 292,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,638.20 : 449,975.70 = 194,921.40 : x
  2. Step 2: Convert to fraction form
    299,638.20/449,975.70 = 194,921.40/x
  3. Step 3: Cross multiply
    299,638.20x = 449,975.70 × 194,921.40
  4. Step 4: Simplify right side
    299,638.20x = 87,709,893,409.98
  5. Step 5: Solve for x
    x = 87,709,893,409.98/299,638.20
  6. Step 6: Final answer
    x = 292,719.33

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1.5x scale

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.