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Finding the Fourth Proportional to 352,165.08, 485,911.80 and 208,972.47

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Solution

The fourth proportional to 352,165.08, 485,911.80 and 208,972.47 is: 288,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,165.08 : 485,911.80 = 208,972.47 : x
  2. Step 2: Convert to fraction form
    352,165.08/485,911.80 = 208,972.47/x
  3. Step 3: Cross multiply
    352,165.08x = 485,911.80 × 208,972.47
  4. Step 4: Simplify right side
    352,165.08x = 101,542,189,048.15
  5. Step 5: Solve for x
    x = 101,542,189,048.15/352,165.08
  6. Step 6: Final answer
    x = 288,336.90

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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.