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Finding the Fourth Proportional to 547,768.89, 821,642.31 and 248,193.63

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Solution

The fourth proportional to 547,768.89, 821,642.31 and 248,193.63 is: 372,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,768.89 : 821,642.31 = 248,193.63 : x
  2. Step 2: Convert to fraction form
    547,768.89/821,642.31 = 248,193.63/x
  3. Step 3: Cross multiply
    547,768.89x = 821,642.31 × 248,193.63
  4. Step 4: Simplify right side
    547,768.89x = 203,926,387,480.49
  5. Step 5: Solve for x
    x = 203,926,387,480.49/547,768.89
  6. Step 6: Final answer
    x = 372,285.45

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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.