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Finding the Fourth Proportional to 278,889.50, 419,851.71 and 254,088.92

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Solution

The fourth proportional to 278,889.50, 419,851.71 and 254,088.92 is: 382,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,889.50 : 419,851.71 = 254,088.92 : x
  2. Step 2: Convert to fraction form
    278,889.50/419,851.71 = 254,088.92/x
  3. Step 3: Cross multiply
    278,889.50x = 419,851.71 × 254,088.92
  4. Step 4: Simplify right side
    278,889.50x = 106,679,667,554.05
  5. Step 5: Solve for x
    x = 106,679,667,554.05/278,889.50
  6. Step 6: Final answer
    x = 382,515.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.