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Finding the Fourth Proportional to 251,971.60, 347,720.84 and 138,794.35

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Solution

The fourth proportional to 251,971.60, 347,720.84 and 138,794.35 is: 191,536.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,971.60 : 347,720.84 = 138,794.35 : x
  2. Step 2: Convert to fraction form
    251,971.60/347,720.84 = 138,794.35/x
  3. Step 3: Cross multiply
    251,971.60x = 347,720.84 × 138,794.35
  4. Step 4: Simplify right side
    251,971.60x = 48,261,687,969.25
  5. Step 5: Solve for x
    x = 48,261,687,969.25/251,971.60
  6. Step 6: Final answer
    x = 191,536.22

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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.