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Finding the Fourth Proportional to 299,431.78, 448,909.26 and 172,928.14

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Solution

The fourth proportional to 299,431.78, 448,909.26 and 172,928.14 is: 259,254.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,431.78 : 448,909.26 = 172,928.14 : x
  2. Step 2: Convert to fraction form
    299,431.78/448,909.26 = 172,928.14/x
  3. Step 3: Cross multiply
    299,431.78x = 448,909.26 × 172,928.14
  4. Step 4: Simplify right side
    299,431.78x = 77,629,043,360.58
  5. Step 5: Solve for x
    x = 77,629,043,360.58/299,431.78
  6. Step 6: Final answer
    x = 259,254.52

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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.