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Finding the Fourth Proportional to 339,281.70, 508,922.55 and 310,251.30

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Solution

The fourth proportional to 339,281.70, 508,922.55 and 310,251.30 is: 465,376.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,281.70 : 508,922.55 = 310,251.30 : x
  2. Step 2: Convert to fraction form
    339,281.70/508,922.55 = 310,251.30/x
  3. Step 3: Cross multiply
    339,281.70x = 508,922.55 × 310,251.30
  4. Step 4: Simplify right side
    339,281.70x = 157,893,882,736.82
  5. Step 5: Solve for x
    x = 157,893,882,736.82/339,281.70
  6. Step 6: Final answer
    x = 465,376.95

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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.