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Finding the Fourth Proportional to 612,213.28, 918,318.48 and 162,934

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Solution

The fourth proportional to 612,213.28, 918,318.48 and 162,934 is: 244,400.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,213.28 : 918,318.48 = 162,934 : x
  2. Step 2: Convert to fraction form
    612,213.28/918,318.48 = 162,934/x
  3. Step 3: Cross multiply
    612,213.28x = 918,318.48 × 162,934
  4. Step 4: Simplify right side
    612,213.28x = 149,625,303,220.32
  5. Step 5: Solve for x
    x = 149,625,303,220.32/612,213.28
  6. Step 6: Final answer
    x = 244,400.62

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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.