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Finding the Fourth Proportional to 299,051.44, 448,578.78 and 88,691.20

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Solution

The fourth proportional to 299,051.44, 448,578.78 and 88,691.20 is: 133,037.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,051.44 : 448,578.78 = 88,691.20 : x
  2. Step 2: Convert to fraction form
    299,051.44/448,578.78 = 88,691.20/x
  3. Step 3: Cross multiply
    299,051.44x = 448,578.78 × 88,691.20
  4. Step 4: Simplify right side
    299,051.44x = 39,784,990,292.74
  5. Step 5: Solve for x
    x = 39,784,990,292.74/299,051.44
  6. Step 6: Final answer
    x = 133,037.28

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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.