Home / 318,872.53-440,027.45-198,011.21

Finding the Fourth Proportional to 318,872.53, 440,027.45 and 198,011.21

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Solution

The fourth proportional to 318,872.53, 440,027.45 and 198,011.21 is: 273,245.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,872.53 : 440,027.45 = 198,011.21 : x
  2. Step 2: Convert to fraction form
    318,872.53/440,027.45 = 198,011.21/x
  3. Step 3: Cross multiply
    318,872.53x = 440,027.45 × 198,011.21
  4. Step 4: Simplify right side
    318,872.53x = 87,130,366,817.66
  5. Step 5: Solve for x
    x = 87,130,366,817.66/318,872.53
  6. Step 6: Final answer
    x = 273,245.14

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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.