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Finding the Fourth Proportional to 303,872.70, 455,809.05 and 82,256.70

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Solution

The fourth proportional to 303,872.70, 455,809.05 and 82,256.70 is: 123,385.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,872.70 : 455,809.05 = 82,256.70 : x
  2. Step 2: Convert to fraction form
    303,872.70/455,809.05 = 82,256.70/x
  3. Step 3: Cross multiply
    303,872.70x = 455,809.05 × 82,256.70
  4. Step 4: Simplify right side
    303,872.70x = 37,493,348,283.14
  5. Step 5: Solve for x
    x = 37,493,348,283.14/303,872.70
  6. Step 6: Final answer
    x = 123,385.05

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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.