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Finding the Fourth Proportional to 254,652.59, 351,403.31 and 139,939.20

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Solution

The fourth proportional to 254,652.59, 351,403.31 and 139,939.20 is: 193,106.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,652.59 : 351,403.31 = 139,939.20 : x
  2. Step 2: Convert to fraction form
    254,652.59/351,403.31 = 139,939.20/x
  3. Step 3: Cross multiply
    254,652.59x = 351,403.31 × 139,939.20
  4. Step 4: Simplify right side
    254,652.59x = 49,175,097,379.06
  5. Step 5: Solve for x
    x = 49,175,097,379.06/254,652.59
  6. Step 6: Final answer
    x = 193,106.61

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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.