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Finding the Fourth Proportional to 323,219.20, 484,828.20 and 145,518.56

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Solution

The fourth proportional to 323,219.20, 484,828.20 and 145,518.56 is: 218,277.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,219.20 : 484,828.20 = 145,518.56 : x
  2. Step 2: Convert to fraction form
    323,219.20/484,828.20 = 145,518.56/x
  3. Step 3: Cross multiply
    323,219.20x = 484,828.20 × 145,518.56
  4. Step 4: Simplify right side
    323,219.20x = 70,551,501,511.39
  5. Step 5: Solve for x
    x = 70,551,501,511.39/323,219.20
  6. Step 6: Final answer
    x = 218,277.57

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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.