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Finding the Fourth Proportional to 223,081.20, 334,621.80 and 213,404.40

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Solution

The fourth proportional to 223,081.20, 334,621.80 and 213,404.40 is: 320,106.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,081.20 : 334,621.80 = 213,404.40 : x
  2. Step 2: Convert to fraction form
    223,081.20/334,621.80 = 213,404.40/x
  3. Step 3: Cross multiply
    223,081.20x = 334,621.80 × 213,404.40
  4. Step 4: Simplify right side
    223,081.20x = 71,409,764,455.92
  5. Step 5: Solve for x
    x = 71,409,764,455.92/223,081.20
  6. Step 6: Final answer
    x = 320,106.60

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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.