Home / 354,037.20-531,055.80-221,067.60

Finding the Fourth Proportional to 354,037.20, 531,055.80 and 221,067.60

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Solution

The fourth proportional to 354,037.20, 531,055.80 and 221,067.60 is: 331,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,037.20 : 531,055.80 = 221,067.60 : x
  2. Step 2: Convert to fraction form
    354,037.20/531,055.80 = 221,067.60/x
  3. Step 3: Cross multiply
    354,037.20x = 531,055.80 × 221,067.60
  4. Step 4: Simplify right side
    354,037.20x = 117,399,231,172.08
  5. Step 5: Solve for x
    x = 117,399,231,172.08/354,037.20
  6. Step 6: Final answer
    x = 331,601.40

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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.