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Finding the Fourth Proportional to 490,202.82, 676,496.30 and 272,420.67

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Solution

The fourth proportional to 490,202.82, 676,496.30 and 272,420.67 is: 375,949.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,202.82 : 676,496.30 = 272,420.67 : x
  2. Step 2: Convert to fraction form
    490,202.82/676,496.30 = 272,420.67/x
  3. Step 3: Cross multiply
    490,202.82x = 676,496.30 × 272,420.67
  4. Step 4: Simplify right side
    490,202.82x = 184,291,573,936.42
  5. Step 5: Solve for x
    x = 184,291,573,936.42/490,202.82
  6. Step 6: Final answer
    x = 375,949.64

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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.