Home / 324,621.80-486,932.70-212,647.40

Finding the Fourth Proportional to 324,621.80, 486,932.70 and 212,647.40

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Solution

The fourth proportional to 324,621.80, 486,932.70 and 212,647.40 is: 318,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,621.80 : 486,932.70 = 212,647.40 : x
  2. Step 2: Convert to fraction form
    324,621.80/486,932.70 = 212,647.40/x
  3. Step 3: Cross multiply
    324,621.80x = 486,932.70 × 212,647.40
  4. Step 4: Simplify right side
    324,621.80x = 103,544,972,629.98
  5. Step 5: Solve for x
    x = 103,544,972,629.98/324,621.80
  6. Step 6: Final answer
    x = 318,971.10

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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.