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Finding the Fourth Proportional to 329,139.40, 493,709.10 and 275,995.30

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Solution

The fourth proportional to 329,139.40, 493,709.10 and 275,995.30 is: 413,992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,139.40 : 493,709.10 = 275,995.30 : x
  2. Step 2: Convert to fraction form
    329,139.40/493,709.10 = 275,995.30/x
  3. Step 3: Cross multiply
    329,139.40x = 493,709.10 × 275,995.30
  4. Step 4: Simplify right side
    329,139.40x = 136,261,391,167.23
  5. Step 5: Solve for x
    x = 136,261,391,167.23/329,139.40
  6. Step 6: Final answer
    x = 413,992.95

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Double scale
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Similar ratio
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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.