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Finding the Fourth Proportional to 278,366.71, 417,759.98 and 203,679.55

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Solution

The fourth proportional to 278,366.71, 417,759.98 and 203,679.55 is: 305,672.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,366.71 : 417,759.98 = 203,679.55 : x
  2. Step 2: Convert to fraction form
    278,366.71/417,759.98 = 203,679.55/x
  3. Step 3: Cross multiply
    278,366.71x = 417,759.98 × 203,679.55
  4. Step 4: Simplify right side
    278,366.71x = 85,089,163,034.01
  5. Step 5: Solve for x
    x = 85,089,163,034.01/278,366.71
  6. Step 6: Final answer
    x = 305,672.91

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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.