Home / 212,629.30-318,950.10-54,857.75

Finding the Fourth Proportional to 212,629.30, 318,950.10 and 54,857.75

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Solution

The fourth proportional to 212,629.30, 318,950.10 and 54,857.75 is: 82,288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,629.30 : 318,950.10 = 54,857.75 : x
  2. Step 2: Convert to fraction form
    212,629.30/318,950.10 = 54,857.75/x
  3. Step 3: Cross multiply
    212,629.30x = 318,950.10 × 54,857.75
  4. Step 4: Simplify right side
    212,629.30x = 17,496,884,573.99
  5. Step 5: Solve for x
    x = 17,496,884,573.99/212,629.30
  6. Step 6: Final answer
    x = 82,288.21

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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.