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Finding the Fourth Proportional to 278,759.85, 416,033.18 and 251,855.70

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Solution

The fourth proportional to 278,759.85, 416,033.18 and 251,855.70 is: 375,880.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,759.85 : 416,033.18 = 251,855.70 : x
  2. Step 2: Convert to fraction form
    278,759.85/416,033.18 = 251,855.70/x
  3. Step 3: Cross multiply
    278,759.85x = 416,033.18 × 251,855.70
  4. Step 4: Simplify right side
    278,759.85x = 104,780,326,512.85
  5. Step 5: Solve for x
    x = 104,780,326,512.85/278,759.85
  6. Step 6: Final answer
    x = 375,880.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.