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Finding the Fourth Proportional to 255,076.19, 351,989.79 and 140,350.63

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Solution

The fourth proportional to 255,076.19, 351,989.79 and 140,350.63 is: 193,675.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,076.19 : 351,989.79 = 140,350.63 : x
  2. Step 2: Convert to fraction form
    255,076.19/351,989.79 = 140,350.63/x
  3. Step 3: Cross multiply
    255,076.19x = 351,989.79 × 140,350.63
  4. Step 4: Simplify right side
    255,076.19x = 49,401,987,020.12
  5. Step 5: Solve for x
    x = 49,401,987,020.12/255,076.19
  6. Step 6: Final answer
    x = 193,675.42

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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.