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Finding the Fourth Proportional to 303,500.70, 455,251.05 and 209,022.30

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Solution

The fourth proportional to 303,500.70, 455,251.05 and 209,022.30 is: 313,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,500.70 : 455,251.05 = 209,022.30 : x
  2. Step 2: Convert to fraction form
    303,500.70/455,251.05 = 209,022.30/x
  3. Step 3: Cross multiply
    303,500.70x = 455,251.05 × 209,022.30
  4. Step 4: Simplify right side
    303,500.70x = 95,157,621,548.42
  5. Step 5: Solve for x
    x = 95,157,621,548.42/303,500.70
  6. Step 6: Final answer
    x = 313,533.45

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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.