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Finding the Fourth Proportional to 299,909.20, 449,914.20 and 89,568.40

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Solution

The fourth proportional to 299,909.20, 449,914.20 and 89,568.40 is: 134,367.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,909.20 : 449,914.20 = 89,568.40 : x
  2. Step 2: Convert to fraction form
    299,909.20/449,914.20 = 89,568.40/x
  3. Step 3: Cross multiply
    299,909.20x = 449,914.20 × 89,568.40
  4. Step 4: Simplify right side
    299,909.20x = 40,298,095,031.28
  5. Step 5: Solve for x
    x = 40,298,095,031.28/299,909.20
  6. Step 6: Final answer
    x = 134,367.65

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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.