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Finding the Fourth Proportional to 299,744.10, 449,616.15 and 285,920.10

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Solution

The fourth proportional to 299,744.10, 449,616.15 and 285,920.10 is: 428,880.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,744.10 : 449,616.15 = 285,920.10 : x
  2. Step 2: Convert to fraction form
    299,744.10/449,616.15 = 285,920.10/x
  3. Step 3: Cross multiply
    299,744.10x = 449,616.15 × 285,920.10
  4. Step 4: Simplify right side
    299,744.10x = 128,554,294,569.62
  5. Step 5: Solve for x
    x = 128,554,294,569.62/299,744.10
  6. Step 6: Final answer
    x = 428,880.15

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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.