Home / 212,359.20-318,538.80-204,194.40

Finding the Fourth Proportional to 212,359.20, 318,538.80 and 204,194.40

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Solution

The fourth proportional to 212,359.20, 318,538.80 and 204,194.40 is: 306,291.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,359.20 : 318,538.80 = 204,194.40 : x
  2. Step 2: Convert to fraction form
    212,359.20/318,538.80 = 204,194.40/x
  3. Step 3: Cross multiply
    212,359.20x = 318,538.80 × 204,194.40
  4. Step 4: Simplify right side
    212,359.20x = 65,043,839,142.72
  5. Step 5: Solve for x
    x = 65,043,839,142.72/212,359.20
  6. Step 6: Final answer
    x = 306,291.60

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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.