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Finding the Fourth Proportional to 250,137.88, 345,189.90 and 135,415.96

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Solution

The fourth proportional to 250,137.88, 345,189.90 and 135,415.96 is: 186,873.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,137.88 : 345,189.90 = 135,415.96 : x
  2. Step 2: Convert to fraction form
    250,137.88/345,189.90 = 135,415.96/x
  3. Step 3: Cross multiply
    250,137.88x = 345,189.90 × 135,415.96
  4. Step 4: Simplify right side
    250,137.88x = 46,744,221,690.80
  5. Step 5: Solve for x
    x = 46,744,221,690.80/250,137.88
  6. Step 6: Final answer
    x = 186,873.82

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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.