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Finding the Fourth Proportional to 251,886.44, 347,605.62 and 138,710

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Solution

The fourth proportional to 251,886.44, 347,605.62 and 138,710 is: 191,421.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,886.44 : 347,605.62 = 138,710 : x
  2. Step 2: Convert to fraction form
    251,886.44/347,605.62 = 138,710/x
  3. Step 3: Cross multiply
    251,886.44x = 347,605.62 × 138,710
  4. Step 4: Simplify right side
    251,886.44x = 48,216,375,550.20
  5. Step 5: Solve for x
    x = 48,216,375,550.20/251,886.44
  6. Step 6: Final answer
    x = 191,421.08

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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.