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Finding the Fourth Proportional to 351,840, 485,536.47 and 190,690.92

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Solution

The fourth proportional to 351,840, 485,536.47 and 190,690.92 is: 263,151.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,840 : 485,536.47 = 190,690.92 : x
  2. Step 2: Convert to fraction form
    351,840/485,536.47 = 190,690.92/x
  3. Step 3: Cross multiply
    351,840x = 485,536.47 × 190,690.92
  4. Step 4: Simplify right side
    351,840x = 92,587,396,157.85
  5. Step 5: Solve for x
    x = 92,587,396,157.85/351,840
  6. Step 6: Final answer
    x = 263,151.99

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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.