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Finding the Fourth Proportional to 323,717.10, 485,460.45 and 146,309.10

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Solution

The fourth proportional to 323,717.10, 485,460.45 and 146,309.10 is: 219,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,717.10 : 485,460.45 = 146,309.10 : x
  2. Step 2: Convert to fraction form
    323,717.10/485,460.45 = 146,309.10/x
  3. Step 3: Cross multiply
    323,717.10x = 485,460.45 × 146,309.10
  4. Step 4: Simplify right side
    323,717.10x = 71,027,281,525.10
  5. Step 5: Solve for x
    x = 71,027,281,525.10/323,717.10
  6. Step 6: Final answer
    x = 219,411.58

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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.