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Finding the Fourth Proportional to 323,972.20, 485,958.30 and 102,356.20

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Solution

The fourth proportional to 323,972.20, 485,958.30 and 102,356.20 is: 153,534.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,972.20 : 485,958.30 = 102,356.20 : x
  2. Step 2: Convert to fraction form
    323,972.20/485,958.30 = 102,356.20/x
  3. Step 3: Cross multiply
    323,972.20x = 485,958.30 × 102,356.20
  4. Step 4: Simplify right side
    323,972.20x = 49,740,844,946.46
  5. Step 5: Solve for x
    x = 49,740,844,946.46/323,972.20
  6. Step 6: Final answer
    x = 153,534.30

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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.