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Finding the Fourth Proportional to 250,786.60, 376,513.80 and 145,681

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Solution

The fourth proportional to 250,786.60, 376,513.80 and 145,681 is: 218,715.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,786.60 : 376,513.80 = 145,681 : x
  2. Step 2: Convert to fraction form
    250,786.60/376,513.80 = 145,681/x
  3. Step 3: Cross multiply
    250,786.60x = 376,513.80 × 145,681
  4. Step 4: Simplify right side
    250,786.60x = 54,850,906,897.80
  5. Step 5: Solve for x
    x = 54,850,906,897.80/250,786.60
  6. Step 6: Final answer
    x = 218,715.46

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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.