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Finding the Fourth Proportional to 280,606.60, 420,909.90 and 192,033.10

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Solution

The fourth proportional to 280,606.60, 420,909.90 and 192,033.10 is: 288,049.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,606.60 : 420,909.90 = 192,033.10 : x
  2. Step 2: Convert to fraction form
    280,606.60/420,909.90 = 192,033.10/x
  3. Step 3: Cross multiply
    280,606.60x = 420,909.90 × 192,033.10
  4. Step 4: Simplify right side
    280,606.60x = 80,828,632,917.69
  5. Step 5: Solve for x
    x = 80,828,632,917.69/280,606.60
  6. Step 6: Final answer
    x = 288,049.65

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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.