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Finding the Fourth Proportional to 299,643.20, 449,637.60 and 112,788.80

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Solution

The fourth proportional to 299,643.20, 449,637.60 and 112,788.80 is: 169,248.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,643.20 : 449,637.60 = 112,788.80 : x
  2. Step 2: Convert to fraction form
    299,643.20/449,637.60 = 112,788.80/x
  3. Step 3: Cross multiply
    299,643.20x = 449,637.60 × 112,788.80
  4. Step 4: Simplify right side
    299,643.20x = 50,714,085,338.88
  5. Step 5: Solve for x
    x = 50,714,085,338.88/299,643.20
  6. Step 6: Final answer
    x = 169,248.24

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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.