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Finding the Fourth Proportional to 308,350.34, 462,518.31 and 142,138.34

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Solution

The fourth proportional to 308,350.34, 462,518.31 and 142,138.34 is: 213,204.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,350.34 : 462,518.31 = 142,138.34 : x
  2. Step 2: Convert to fraction form
    308,350.34/462,518.31 = 142,138.34/x
  3. Step 3: Cross multiply
    308,350.34x = 462,518.31 × 142,138.34
  4. Step 4: Simplify right side
    308,350.34x = 65,741,584,803.01
  5. Step 5: Solve for x
    x = 65,741,584,803.01/308,350.34
  6. Step 6: Final answer
    x = 213,204.19

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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.