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Finding the Fourth Proportional to 251,843.68, 347,532.98 and 137,119.43

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Solution

The fourth proportional to 251,843.68, 347,532.98 and 137,119.43 is: 189,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,843.68 : 347,532.98 = 137,119.43 : x
  2. Step 2: Convert to fraction form
    251,843.68/347,532.98 = 137,119.43/x
  3. Step 3: Cross multiply
    251,843.68x = 347,532.98 × 137,119.43
  4. Step 4: Simplify right side
    251,843.68x = 47,653,525,078.33
  5. Step 5: Solve for x
    x = 47,653,525,078.33/251,843.68
  6. Step 6: Final answer
    x = 189,218.66

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1.5x scale

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.