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Finding the Fourth Proportional to 299,890.88, 449,683.44 and 100,139.52

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Solution

The fourth proportional to 299,890.88, 449,683.44 and 100,139.52 is: 150,158.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,890.88 : 449,683.44 = 100,139.52 : x
  2. Step 2: Convert to fraction form
    299,890.88/449,683.44 = 100,139.52/x
  3. Step 3: Cross multiply
    299,890.88x = 449,683.44 × 100,139.52
  4. Step 4: Simplify right side
    299,890.88x = 45,031,083,833.55
  5. Step 5: Solve for x
    x = 45,031,083,833.55/299,890.88
  6. Step 6: Final answer
    x = 150,158.23

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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.