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Finding the Fourth Proportional to 345,029.80, 517,544.70 and 329,974.60

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Solution

The fourth proportional to 345,029.80, 517,544.70 and 329,974.60 is: 494,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,029.80 : 517,544.70 = 329,974.60 : x
  2. Step 2: Convert to fraction form
    345,029.80/517,544.70 = 329,974.60/x
  3. Step 3: Cross multiply
    345,029.80x = 517,544.70 × 329,974.60
  4. Step 4: Simplify right side
    345,029.80x = 170,776,605,364.62
  5. Step 5: Solve for x
    x = 170,776,605,364.62/345,029.80
  6. Step 6: Final answer
    x = 494,961.90

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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.