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Finding the Fourth Proportional to 445,113.87, 666,910.10 and 318,105.23

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Solution

The fourth proportional to 445,113.87, 666,910.10 and 318,105.23 is: 476,614.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,113.87 : 666,910.10 = 318,105.23 : x
  2. Step 2: Convert to fraction form
    445,113.87/666,910.10 = 318,105.23/x
  3. Step 3: Cross multiply
    445,113.87x = 666,910.10 × 318,105.23
  4. Step 4: Simplify right side
    445,113.87x = 212,147,585,824.75
  5. Step 5: Solve for x
    x = 212,147,585,824.75/445,113.87
  6. Step 6: Final answer
    x = 476,614.19

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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.