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Finding the Fourth Proportional to 253,086.72, 349,261.26 and 138,365.62

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Solution

The fourth proportional to 253,086.72, 349,261.26 and 138,365.62 is: 190,945.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,086.72 : 349,261.26 = 138,365.62 : x
  2. Step 2: Convert to fraction form
    253,086.72/349,261.26 = 138,365.62/x
  3. Step 3: Cross multiply
    253,086.72x = 349,261.26 × 138,365.62
  4. Step 4: Simplify right side
    253,086.72x = 48,325,750,781.88
  5. Step 5: Solve for x
    x = 48,325,750,781.88/253,086.72
  6. Step 6: Final answer
    x = 190,945.42

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1.5x scale

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.