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Finding the Fourth Proportional to 251,058.60, 376,469.10 and 145,909.80

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Solution

The fourth proportional to 251,058.60, 376,469.10 and 145,909.80 is: 218,795.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,058.60 : 376,469.10 = 145,909.80 : x
  2. Step 2: Convert to fraction form
    251,058.60/376,469.10 = 145,909.80/x
  3. Step 3: Cross multiply
    251,058.60x = 376,469.10 × 145,909.80
  4. Step 4: Simplify right side
    251,058.60x = 54,930,531,087.18
  5. Step 5: Solve for x
    x = 54,930,531,087.18/251,058.60
  6. Step 6: Final answer
    x = 218,795.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.