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Finding the Fourth Proportional to 654,616.80, 981,730.80 and 255,027.60

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Solution

The fourth proportional to 654,616.80, 981,730.80 and 255,027.60 is: 382,465.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,616.80 : 981,730.80 = 255,027.60 : x
  2. Step 2: Convert to fraction form
    654,616.80/981,730.80 = 255,027.60/x
  3. Step 3: Cross multiply
    654,616.80x = 981,730.80 × 255,027.60
  4. Step 4: Simplify right side
    654,616.80x = 250,368,449,770.08
  5. Step 5: Solve for x
    x = 250,368,449,770.08/654,616.80
  6. Step 6: Final answer
    x = 382,465.67

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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.