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Finding the Fourth Proportional to 352,433.89, 486,359.32 and 191,289

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Solution

The fourth proportional to 352,433.89, 486,359.32 and 191,289 is: 263,979.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,433.89 : 486,359.32 = 191,289 : x
  2. Step 2: Convert to fraction form
    352,433.89/486,359.32 = 191,289/x
  3. Step 3: Cross multiply
    352,433.89x = 486,359.32 × 191,289
  4. Step 4: Simplify right side
    352,433.89x = 93,035,187,485.26
  5. Step 5: Solve for x
    x = 93,035,187,485.26/352,433.89
  6. Step 6: Final answer
    x = 263,979.12

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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.