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Finding the Fourth Proportional to 339,975.70, 509,963.55 and 279,841.30

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Solution

The fourth proportional to 339,975.70, 509,963.55 and 279,841.30 is: 419,761.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,975.70 : 509,963.55 = 279,841.30 : x
  2. Step 2: Convert to fraction form
    339,975.70/509,963.55 = 279,841.30/x
  3. Step 3: Cross multiply
    339,975.70x = 509,963.55 × 279,841.30
  4. Step 4: Simplify right side
    339,975.70x = 142,708,862,784.62
  5. Step 5: Solve for x
    x = 142,708,862,784.62/339,975.70
  6. Step 6: Final answer
    x = 419,761.95

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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.