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Finding the Fourth Proportional to 329,456.10, 493,619.45 and 221,182.68

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Solution

The fourth proportional to 329,456.10, 493,619.45 and 221,182.68 is: 331,394.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,456.10 : 493,619.45 = 221,182.68 : x
  2. Step 2: Convert to fraction form
    329,456.10/493,619.45 = 221,182.68/x
  3. Step 3: Cross multiply
    329,456.10x = 493,619.45 × 221,182.68
  4. Step 4: Simplify right side
    329,456.10x = 109,180,071,745.21
  5. Step 5: Solve for x
    x = 109,180,071,745.21/329,456.10
  6. Step 6: Final answer
    x = 331,394.90

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1.5x scale

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.