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Finding the Fourth Proportional to 375,640.49, 518,382.84 and 203,563.22

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Solution

The fourth proportional to 375,640.49, 518,382.84 and 203,563.22 is: 280,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,640.49 : 518,382.84 = 203,563.22 : x
  2. Step 2: Convert to fraction form
    375,640.49/518,382.84 = 203,563.22/x
  3. Step 3: Cross multiply
    375,640.49x = 518,382.84 × 203,563.22
  4. Step 4: Simplify right side
    375,640.49x = 105,523,680,103.15
  5. Step 5: Solve for x
    x = 105,523,680,103.15/375,640.49
  6. Step 6: Final answer
    x = 280,916.68

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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.