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Finding the Fourth Proportional to 254,620.06, 351,354.71 and 139,892.87

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Solution

The fourth proportional to 254,620.06, 351,354.71 and 139,892.87 is: 193,040.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,620.06 : 351,354.71 = 139,892.87 : x
  2. Step 2: Convert to fraction form
    254,620.06/351,354.71 = 139,892.87/x
  3. Step 3: Cross multiply
    254,620.06x = 351,354.71 × 139,892.87
  4. Step 4: Simplify right side
    254,620.06x = 49,152,019,998.04
  5. Step 5: Solve for x
    x = 49,152,019,998.04/254,620.06
  6. Step 6: Final answer
    x = 193,040.64

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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.