Home / 212,868.80-318,914.40-173,211.20

Finding the Fourth Proportional to 212,868.80, 318,914.40 and 173,211.20

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Solution

The fourth proportional to 212,868.80, 318,914.40 and 173,211.20 is: 259,500.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,868.80 : 318,914.40 = 173,211.20 : x
  2. Step 2: Convert to fraction form
    212,868.80/318,914.40 = 173,211.20/x
  3. Step 3: Cross multiply
    212,868.80x = 318,914.40 × 173,211.20
  4. Step 4: Simplify right side
    212,868.80x = 55,239,545,921.28
  5. Step 5: Solve for x
    x = 55,239,545,921.28/212,868.80
  6. Step 6: Final answer
    x = 259,500.43

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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.