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Finding the Fourth Proportional to 251,998.82, 347,741.84 and 138,821.56

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Solution

The fourth proportional to 251,998.82, 347,741.84 and 138,821.56 is: 191,564.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,998.82 : 347,741.84 = 138,821.56 : x
  2. Step 2: Convert to fraction form
    251,998.82/347,741.84 = 138,821.56/x
  3. Step 3: Cross multiply
    251,998.82x = 347,741.84 × 138,821.56
  4. Step 4: Simplify right side
    251,998.82x = 48,274,064,706.07
  5. Step 5: Solve for x
    x = 48,274,064,706.07/251,998.82
  6. Step 6: Final answer
    x = 191,564.65

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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.