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Finding the Fourth Proportional to 339,310.10, 508,965.15 and 310,279.70

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Solution

The fourth proportional to 339,310.10, 508,965.15 and 310,279.70 is: 465,419.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,310.10 : 508,965.15 = 310,279.70 : x
  2. Step 2: Convert to fraction form
    339,310.10/508,965.15 = 310,279.70/x
  3. Step 3: Cross multiply
    339,310.10x = 508,965.15 × 310,279.70
  4. Step 4: Simplify right side
    339,310.10x = 157,921,554,052.46
  5. Step 5: Solve for x
    x = 157,921,554,052.46/339,310.10
  6. Step 6: Final answer
    x = 465,419.55

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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.