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Finding the Fourth Proportional to 494,172.68, 681,953.40 and 276,378.92

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Solution

The fourth proportional to 494,172.68, 681,953.40 and 276,378.92 is: 381,400.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,172.68 : 681,953.40 = 276,378.92 : x
  2. Step 2: Convert to fraction form
    494,172.68/681,953.40 = 276,378.92/x
  3. Step 3: Cross multiply
    494,172.68x = 681,953.40 × 276,378.92
  4. Step 4: Simplify right side
    494,172.68x = 188,477,544,182.33
  5. Step 5: Solve for x
    x = 188,477,544,182.33/494,172.68
  6. Step 6: Final answer
    x = 381,400.17

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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.