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Finding the Fourth Proportional to 254,431.87, 351,100.01 and 139,709.71

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Solution

The fourth proportional to 254,431.87, 351,100.01 and 139,709.71 is: 192,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,431.87 : 351,100.01 = 139,709.71 : x
  2. Step 2: Convert to fraction form
    254,431.87/351,100.01 = 139,709.71/x
  3. Step 3: Cross multiply
    254,431.87x = 351,100.01 × 139,709.71
  4. Step 4: Simplify right side
    254,431.87x = 49,052,080,157.11
  5. Step 5: Solve for x
    x = 49,052,080,157.11/254,431.87
  6. Step 6: Final answer
    x = 192,790.63

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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.