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Finding the Fourth Proportional to 352,705, 486,736.47 and 191,563.20

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Solution

The fourth proportional to 352,705, 486,736.47 and 191,563.20 is: 264,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,705 : 486,736.47 = 191,563.20 : x
  2. Step 2: Convert to fraction form
    352,705/486,736.47 = 191,563.20/x
  3. Step 3: Cross multiply
    352,705x = 486,736.47 × 191,563.20
  4. Step 4: Simplify right side
    352,705x = 93,240,795,749.90
  5. Step 5: Solve for x
    x = 93,240,795,749.90/352,705
  6. Step 6: Final answer
    x = 264,359.15

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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.