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Finding the Fourth Proportional to 355,518.02, 490,622.60 and 212,251.30

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Solution

The fourth proportional to 355,518.02, 490,622.60 and 212,251.30 is: 292,911.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,518.02 : 490,622.60 = 212,251.30 : x
  2. Step 2: Convert to fraction form
    355,518.02/490,622.60 = 212,251.30/x
  3. Step 3: Cross multiply
    355,518.02x = 490,622.60 × 212,251.30
  4. Step 4: Simplify right side
    355,518.02x = 104,135,284,659.38
  5. Step 5: Solve for x
    x = 104,135,284,659.38/355,518.02
  6. Step 6: Final answer
    x = 292,911.41

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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.