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Finding the Fourth Proportional to 299,817.20, 449,898.60 and 112,962.80

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Solution

The fourth proportional to 299,817.20, 449,898.60 and 112,962.80 is: 169,509.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,817.20 : 449,898.60 = 112,962.80 : x
  2. Step 2: Convert to fraction form
    299,817.20/449,898.60 = 112,962.80/x
  3. Step 3: Cross multiply
    299,817.20x = 449,898.60 × 112,962.80
  4. Step 4: Simplify right side
    299,817.20x = 50,821,805,572.08
  5. Step 5: Solve for x
    x = 50,821,805,572.08/299,817.20
  6. Step 6: Final answer
    x = 169,509.31

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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.