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Finding the Fourth Proportional to 254,954.96, 351,840.12 and 138,669.47

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Solution

The fourth proportional to 254,954.96, 351,840.12 and 138,669.47 is: 191,365.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,954.96 : 351,840.12 = 138,669.47 : x
  2. Step 2: Convert to fraction form
    254,954.96/351,840.12 = 138,669.47/x
  3. Step 3: Cross multiply
    254,954.96x = 351,840.12 × 138,669.47
  4. Step 4: Simplify right side
    254,954.96x = 48,789,482,965.14
  5. Step 5: Solve for x
    x = 48,789,482,965.14/254,954.96
  6. Step 6: Final answer
    x = 191,365.11

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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.