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Finding the Fourth Proportional to 368,383.63, 508,183.32 and 215,321.83

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Solution

The fourth proportional to 368,383.63, 508,183.32 and 215,321.83 is: 297,035.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,383.63 : 508,183.32 = 215,321.83 : x
  2. Step 2: Convert to fraction form
    368,383.63/508,183.32 = 215,321.83/x
  3. Step 3: Cross multiply
    368,383.63x = 508,183.32 × 215,321.83
  4. Step 4: Simplify right side
    368,383.63x = 109,422,960,763.69
  5. Step 5: Solve for x
    x = 109,422,960,763.69/368,383.63
  6. Step 6: Final answer
    x = 297,035.35

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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.