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Finding the Fourth Proportional to 381,086.96, 571,652.88 and 128,346.32

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Solution

The fourth proportional to 381,086.96, 571,652.88 and 128,346.32 is: 192,527.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,086.96 : 571,652.88 = 128,346.32 : x
  2. Step 2: Convert to fraction form
    381,086.96/571,652.88 = 128,346.32/x
  3. Step 3: Cross multiply
    381,086.96x = 571,652.88 × 128,346.32
  4. Step 4: Simplify right side
    381,086.96x = 73,369,543,465.40
  5. Step 5: Solve for x
    x = 73,369,543,465.40/381,086.96
  6. Step 6: Final answer
    x = 192,527.04

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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.