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Finding the Fourth Proportional to 300,170.10, 449,161.65 and 221,438.10

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Solution

The fourth proportional to 300,170.10, 449,161.65 and 221,438.10 is: 331,350.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,170.10 : 449,161.65 = 221,438.10 : x
  2. Step 2: Convert to fraction form
    300,170.10/449,161.65 = 221,438.10/x
  3. Step 3: Cross multiply
    300,170.10x = 449,161.65 × 221,438.10
  4. Step 4: Simplify right side
    300,170.10x = 99,461,502,368.87
  5. Step 5: Solve for x
    x = 99,461,502,368.87/300,170.10
  6. Step 6: Final answer
    x = 331,350.47

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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.