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Finding the Fourth Proportional to 663,148.20, 994,722.30 and 219,858.60

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Solution

The fourth proportional to 663,148.20, 994,722.30 and 219,858.60 is: 329,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,148.20 : 994,722.30 = 219,858.60 : x
  2. Step 2: Convert to fraction form
    663,148.20/994,722.30 = 219,858.60/x
  3. Step 3: Cross multiply
    663,148.20x = 994,722.30 × 219,858.60
  4. Step 4: Simplify right side
    663,148.20x = 218,698,252,266.78
  5. Step 5: Solve for x
    x = 218,698,252,266.78/663,148.20
  6. Step 6: Final answer
    x = 329,787.90

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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.