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Finding the Fourth Proportional to 355,540.30, 490,653.30 and 212,273.62

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Solution

The fourth proportional to 355,540.30, 490,653.30 and 212,273.62 is: 292,942.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,540.30 : 490,653.30 = 212,273.62 : x
  2. Step 2: Convert to fraction form
    355,540.30/490,653.30 = 212,273.62/x
  3. Step 3: Cross multiply
    355,540.30x = 490,653.30 × 212,273.62
  4. Step 4: Simplify right side
    355,540.30x = 104,152,752,155.95
  5. Step 5: Solve for x
    x = 104,152,752,155.95/355,540.30
  6. Step 6: Final answer
    x = 292,942.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.