Home / 324,621.60-486,932.40-212,647.20

Finding the Fourth Proportional to 324,621.60, 486,932.40 and 212,647.20

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Solution

The fourth proportional to 324,621.60, 486,932.40 and 212,647.20 is: 318,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,621.60 : 486,932.40 = 212,647.20 : x
  2. Step 2: Convert to fraction form
    324,621.60/486,932.40 = 212,647.20/x
  3. Step 3: Cross multiply
    324,621.60x = 486,932.40 × 212,647.20
  4. Step 4: Simplify right side
    324,621.60x = 103,544,811,449.28
  5. Step 5: Solve for x
    x = 103,544,811,449.28/324,621.60
  6. Step 6: Final answer
    x = 318,970.80

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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.