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Finding the Fourth Proportional to 251,147.88, 346,588.98 and 137,974.92

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Solution

The fourth proportional to 251,147.88, 346,588.98 and 137,974.92 is: 190,408.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,147.88 : 346,588.98 = 137,974.92 : x
  2. Step 2: Convert to fraction form
    251,147.88/346,588.98 = 137,974.92/x
  3. Step 3: Cross multiply
    251,147.88x = 346,588.98 × 137,974.92
  4. Step 4: Simplify right side
    251,147.88x = 47,820,586,788.38
  5. Step 5: Solve for x
    x = 47,820,586,788.38/251,147.88
  6. Step 6: Final answer
    x = 190,408.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.