Home / 280,453,177.30-420,659,836.90-86,344,352.05

Finding the Fourth Proportional to 280,453,177.30, 420,659,836.90 and 86,344,352.05

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Solution

The fourth proportional to 280,453,177.30, 420,659,836.90 and 86,344,352.05 is: 129,510,392.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,453,177.30 : 420,659,836.90 = 86,344,352.05 : x
  2. Step 2: Convert to fraction form
    280,453,177.30/420,659,836.90 = 86,344,352.05/x
  3. Step 3: Cross multiply
    280,453,177.30x = 420,659,836.90 × 86,344,352.05
  4. Step 4: Simplify right side
    280,453,177.30x = 36,321,601,048,485,880
  5. Step 5: Solve for x
    x = 36,321,601,048,485,880/280,453,177.30
  6. Step 6: Final answer
    x = 129,510,392.43

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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.