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Finding the Fourth Proportional to 352,455.28, 486,388.72 and 191,310.32

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Solution

The fourth proportional to 352,455.28, 486,388.72 and 191,310.32 is: 264,008.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,455.28 : 486,388.72 = 191,310.32 : x
  2. Step 2: Convert to fraction form
    352,455.28/486,388.72 = 191,310.32/x
  3. Step 3: Cross multiply
    352,455.28x = 486,388.72 × 191,310.32
  4. Step 4: Simplify right side
    352,455.28x = 93,051,181,667.59
  5. Step 5: Solve for x
    x = 93,051,181,667.59/352,455.28
  6. Step 6: Final answer
    x = 264,008.48

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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.