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Finding the Fourth Proportional to 663,150.30, 994,725.45 and 219,918.30

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Solution

The fourth proportional to 663,150.30, 994,725.45 and 219,918.30 is: 329,877.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,150.30 : 994,725.45 = 219,918.30 : x
  2. Step 2: Convert to fraction form
    663,150.30/994,725.45 = 219,918.30/x
  3. Step 3: Cross multiply
    663,150.30x = 994,725.45 × 219,918.30
  4. Step 4: Simplify right side
    663,150.30x = 218,758,329,930.74
  5. Step 5: Solve for x
    x = 218,758,329,930.74/663,150.30
  6. Step 6: Final answer
    x = 329,877.45

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Double scale
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Similar ratio
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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.