Home / 323,621.91-485,432.43-86,964.60

Finding the Fourth Proportional to 323,621.91, 485,432.43 and 86,964.60

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Solution

The fourth proportional to 323,621.91, 485,432.43 and 86,964.60 is: 130,446.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,621.91 : 485,432.43 = 86,964.60 : x
  2. Step 2: Convert to fraction form
    323,621.91/485,432.43 = 86,964.60/x
  3. Step 3: Cross multiply
    323,621.91x = 485,432.43 × 86,964.60
  4. Step 4: Simplify right side
    323,621.91x = 42,215,437,101.98
  5. Step 5: Solve for x
    x = 42,215,437,101.98/323,621.91
  6. Step 6: Final answer
    x = 130,446.78

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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.