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Finding the Fourth Proportional to 219,919.20, 329,878.80 and 192,800.40

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Solution

The fourth proportional to 219,919.20, 329,878.80 and 192,800.40 is: 289,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,919.20 : 329,878.80 = 192,800.40 : x
  2. Step 2: Convert to fraction form
    219,919.20/329,878.80 = 192,800.40/x
  3. Step 3: Cross multiply
    219,919.20x = 329,878.80 × 192,800.40
  4. Step 4: Simplify right side
    219,919.20x = 63,600,764,591.52
  5. Step 5: Solve for x
    x = 63,600,764,591.52/219,919.20
  6. Step 6: Final answer
    x = 289,200.60

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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.