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Finding the Fourth Proportional to 299,426.40, 449,139.60 and 193,138.20

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Solution

The fourth proportional to 299,426.40, 449,139.60 and 193,138.20 is: 289,707.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,426.40 : 449,139.60 = 193,138.20 : x
  2. Step 2: Convert to fraction form
    299,426.40/449,139.60 = 193,138.20/x
  3. Step 3: Cross multiply
    299,426.40x = 449,139.60 × 193,138.20
  4. Step 4: Simplify right side
    299,426.40x = 86,746,013,892.72
  5. Step 5: Solve for x
    x = 86,746,013,892.72/299,426.40
  6. Step 6: Final answer
    x = 289,707.30

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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.