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Finding the Fourth Proportional to 381,892.44, 526,942.08 and 220,688.40

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Solution

The fourth proportional to 381,892.44, 526,942.08 and 220,688.40 is: 304,509.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,892.44 : 526,942.08 = 220,688.40 : x
  2. Step 2: Convert to fraction form
    381,892.44/526,942.08 = 220,688.40/x
  3. Step 3: Cross multiply
    381,892.44x = 526,942.08 × 220,688.40
  4. Step 4: Simplify right side
    381,892.44x = 116,290,004,527.87
  5. Step 5: Solve for x
    x = 116,290,004,527.87/381,892.44
  6. Step 6: Final answer
    x = 304,509.84

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1.5x scale

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.