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Finding the Fourth Proportional to 481,387.32, 663,910.92 and 309,333.24

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Solution

The fourth proportional to 481,387.32, 663,910.92 and 309,333.24 is: 426,620.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,387.32 : 663,910.92 = 309,333.24 : x
  2. Step 2: Convert to fraction form
    481,387.32/663,910.92 = 309,333.24/x
  3. Step 3: Cross multiply
    481,387.32x = 663,910.92 × 309,333.24
  4. Step 4: Simplify right side
    481,387.32x = 205,369,715,954.98
  5. Step 5: Solve for x
    x = 205,369,715,954.98/481,387.32
  6. Step 6: Final answer
    x = 426,620.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.