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Finding the Fourth Proportional to 279,797.06, 419,777.63 and 90,253.62

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Solution

The fourth proportional to 279,797.06, 419,777.63 and 90,253.62 is: 135,406.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,797.06 : 419,777.63 = 90,253.62 : x
  2. Step 2: Convert to fraction form
    279,797.06/419,777.63 = 90,253.62/x
  3. Step 3: Cross multiply
    279,797.06x = 419,777.63 × 90,253.62
  4. Step 4: Simplify right side
    279,797.06x = 37,886,450,702.52
  5. Step 5: Solve for x
    x = 37,886,450,702.52/279,797.06
  6. Step 6: Final answer
    x = 135,406.89

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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.