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Finding the Fourth Proportional to 381,690.50, 572,535.78 and 119,034.50

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Solution

The fourth proportional to 381,690.50, 572,535.78 and 119,034.50 is: 178,551.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,690.50 : 572,535.78 = 119,034.50 : x
  2. Step 2: Convert to fraction form
    381,690.50/572,535.78 = 119,034.50/x
  3. Step 3: Cross multiply
    381,690.50x = 572,535.78 × 119,034.50
  4. Step 4: Simplify right side
    381,690.50x = 68,151,510,304.41
  5. Step 5: Solve for x
    x = 68,151,510,304.41/381,690.50
  6. Step 6: Final answer
    x = 178,551.76

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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.