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Finding the Fourth Proportional to 251,253.88, 346,743.63 and 142,379.33

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Solution

The fourth proportional to 251,253.88, 346,743.63 and 142,379.33 is: 196,490.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,253.88 : 346,743.63 = 142,379.33 : x
  2. Step 2: Convert to fraction form
    251,253.88/346,743.63 = 142,379.33/x
  3. Step 3: Cross multiply
    251,253.88x = 346,743.63 × 142,379.33
  4. Step 4: Simplify right side
    251,253.88x = 49,369,123,987.45
  5. Step 5: Solve for x
    x = 49,369,123,987.45/251,253.88
  6. Step 6: Final answer
    x = 196,490.99

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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.