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Finding the Fourth Proportional to 303,464.70, 455,197.05 and 208,986.30

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Solution

The fourth proportional to 303,464.70, 455,197.05 and 208,986.30 is: 313,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,464.70 : 455,197.05 = 208,986.30 : x
  2. Step 2: Convert to fraction form
    303,464.70/455,197.05 = 208,986.30/x
  3. Step 3: Cross multiply
    303,464.70x = 455,197.05 × 208,986.30
  4. Step 4: Simplify right side
    303,464.70x = 95,129,947,250.42
  5. Step 5: Solve for x
    x = 95,129,947,250.42/303,464.70
  6. Step 6: Final answer
    x = 313,479.45

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Similar ratio
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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.