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Finding the Fourth Proportional to 251,335.31, 376,884.50 and 91,298.42

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Solution

The fourth proportional to 251,335.31, 376,884.50 and 91,298.42 is: 136,904.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,335.31 : 376,884.50 = 91,298.42 : x
  2. Step 2: Convert to fraction form
    251,335.31/376,884.50 = 91,298.42/x
  3. Step 3: Cross multiply
    251,335.31x = 376,884.50 × 91,298.42
  4. Step 4: Simplify right side
    251,335.31x = 34,408,957,031.58
  5. Step 5: Solve for x
    x = 34,408,957,031.58/251,335.31
  6. Step 6: Final answer
    x = 136,904.59

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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.