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Finding the Fourth Proportional to 445,107.30, 666,900.28 and 318,098.64

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Solution

The fourth proportional to 445,107.30, 666,900.28 and 318,098.64 is: 476,604.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,107.30 : 666,900.28 = 318,098.64 : x
  2. Step 2: Convert to fraction form
    445,107.30/666,900.28 = 318,098.64/x
  3. Step 3: Cross multiply
    445,107.30x = 666,900.28 × 318,098.64
  4. Step 4: Simplify right side
    445,107.30x = 212,140,074,982.12
  5. Step 5: Solve for x
    x = 212,140,074,982.12/445,107.30
  6. Step 6: Final answer
    x = 476,604.35

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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.