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Finding the Fourth Proportional to 286,378.45, 395,179.12 and 165,527.56

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Solution

The fourth proportional to 286,378.45, 395,179.12 and 165,527.56 is: 228,414.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,378.45 : 395,179.12 = 165,527.56 : x
  2. Step 2: Convert to fraction form
    286,378.45/395,179.12 = 165,527.56/x
  3. Step 3: Cross multiply
    286,378.45x = 395,179.12 × 165,527.56
  4. Step 4: Simplify right side
    286,378.45x = 65,413,035,496.55
  5. Step 5: Solve for x
    x = 65,413,035,496.55/286,378.45
  6. Step 6: Final answer
    x = 228,414.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.