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Finding the Fourth Proportional to 490,297.76, 676,628.26 and 272,510.78

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Solution

The fourth proportional to 490,297.76, 676,628.26 and 272,510.78 is: 376,074.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,297.76 : 676,628.26 = 272,510.78 : x
  2. Step 2: Convert to fraction form
    490,297.76/676,628.26 = 272,510.78/x
  3. Step 3: Cross multiply
    490,297.76x = 676,628.26 × 272,510.78
  4. Step 4: Simplify right side
    490,297.76x = 184,388,494,902.64
  5. Step 5: Solve for x
    x = 184,388,494,902.64/490,297.76
  6. Step 6: Final answer
    x = 376,074.52

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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.