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Finding the Fourth Proportional to 381,563.65, 572,426.43 and 144,901.09

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Solution

The fourth proportional to 381,563.65, 572,426.43 and 144,901.09 is: 217,382.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,563.65 : 572,426.43 = 144,901.09 : x
  2. Step 2: Convert to fraction form
    381,563.65/572,426.43 = 144,901.09/x
  3. Step 3: Cross multiply
    381,563.65x = 572,426.43 × 144,901.09
  4. Step 4: Simplify right side
    381,563.65x = 82,945,213,651.81
  5. Step 5: Solve for x
    x = 82,945,213,651.81/381,563.65
  6. Step 6: Final answer
    x = 217,382.38

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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.