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Finding the Fourth Proportional to 380,891.92, 571,332.18 and 92,704.55

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Solution

The fourth proportional to 380,891.92, 571,332.18 and 92,704.55 is: 139,055.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,891.92 : 571,332.18 = 92,704.55 : x
  2. Step 2: Convert to fraction form
    380,891.92/571,332.18 = 92,704.55/x
  3. Step 3: Cross multiply
    380,891.92x = 571,332.18 × 92,704.55
  4. Step 4: Simplify right side
    380,891.92x = 52,965,089,327.24
  5. Step 5: Solve for x
    x = 52,965,089,327.24/380,891.92
  6. Step 6: Final answer
    x = 139,055.43

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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.