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Finding the Fourth Proportional to 279,606.76, 385,589.10 and 187,933.48

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Solution

The fourth proportional to 279,606.76, 385,589.10 and 187,933.48 is: 259,167.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,606.76 : 385,589.10 = 187,933.48 : x
  2. Step 2: Convert to fraction form
    279,606.76/385,589.10 = 187,933.48/x
  3. Step 3: Cross multiply
    279,606.76x = 385,589.10 × 187,933.48
  4. Step 4: Simplify right side
    279,606.76x = 72,465,101,413.07
  5. Step 5: Solve for x
    x = 72,465,101,413.07/279,606.76
  6. Step 6: Final answer
    x = 259,167.92

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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.