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Finding the Fourth Proportional to 296,912.84, 445,362.79 and 72,274.46

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Solution

The fourth proportional to 296,912.84, 445,362.79 and 72,274.46 is: 108,410.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,912.84 : 445,362.79 = 72,274.46 : x
  2. Step 2: Convert to fraction form
    296,912.84/445,362.79 = 72,274.46/x
  3. Step 3: Cross multiply
    296,912.84x = 445,362.79 × 72,274.46
  4. Step 4: Simplify right side
    296,912.84x = 32,188,355,151.34
  5. Step 5: Solve for x
    x = 32,188,355,151.34/296,912.84
  6. Step 6: Final answer
    x = 108,410.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.