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Finding the Fourth Proportional to 375,638.49, 518,380.08 and 203,561.22

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Solution

The fourth proportional to 375,638.49, 518,380.08 and 203,561.22 is: 280,913.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,638.49 : 518,380.08 = 203,561.22 : x
  2. Step 2: Convert to fraction form
    375,638.49/518,380.08 = 203,561.22/x
  3. Step 3: Cross multiply
    375,638.49x = 518,380.08 × 203,561.22
  4. Step 4: Simplify right side
    375,638.49x = 105,522,081,508.50
  5. Step 5: Solve for x
    x = 105,522,081,508.50/375,638.49
  6. Step 6: Final answer
    x = 280,913.92

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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.