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Finding the Fourth Proportional to 490,199.96, 676,461.20 and 272,407.90

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Solution

The fourth proportional to 490,199.96, 676,461.20 and 272,407.90 is: 375,914.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,199.96 : 676,461.20 = 272,407.90 : x
  2. Step 2: Convert to fraction form
    490,199.96/676,461.20 = 272,407.90/x
  3. Step 3: Cross multiply
    490,199.96x = 676,461.20 × 272,407.90
  4. Step 4: Simplify right side
    490,199.96x = 184,273,375,604.50
  5. Step 5: Solve for x
    x = 184,273,375,604.50/490,199.96
  6. Step 6: Final answer
    x = 375,914.71

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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.