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Finding the Fourth Proportional to 258,187.50, 387,278.25 and 181,972.98

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Solution

The fourth proportional to 258,187.50, 387,278.25 and 181,972.98 is: 272,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,187.50 : 387,278.25 = 181,972.98 : x
  2. Step 2: Convert to fraction form
    258,187.50/387,278.25 = 181,972.98/x
  3. Step 3: Cross multiply
    258,187.50x = 387,278.25 × 181,972.98
  4. Step 4: Simplify right side
    258,187.50x = 70,474,177,241.69
  5. Step 5: Solve for x
    x = 70,474,177,241.69/258,187.50
  6. Step 6: Final answer
    x = 272,957.36

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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.