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Finding the Fourth Proportional to 352,879.80, 486,965.70 and 191,731.20

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Solution

The fourth proportional to 352,879.80, 486,965.70 and 191,731.20 is: 264,584.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,879.80 : 486,965.70 = 191,731.20 : x
  2. Step 2: Convert to fraction form
    352,879.80/486,965.70 = 191,731.20/x
  3. Step 3: Cross multiply
    352,879.80x = 486,965.70 × 191,731.20
  4. Step 4: Simplify right side
    352,879.80x = 93,366,518,019.84
  5. Step 5: Solve for x
    x = 93,366,518,019.84/352,879.80
  6. Step 6: Final answer
    x = 264,584.48

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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.