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Finding the Fourth Proportional to 352,424.43, 486,345.95 and 191,279.48

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Solution

The fourth proportional to 352,424.43, 486,345.95 and 191,279.48 is: 263,965.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,424.43 : 486,345.95 = 191,279.48 : x
  2. Step 2: Convert to fraction form
    352,424.43/486,345.95 = 191,279.48/x
  3. Step 3: Cross multiply
    352,424.43x = 486,345.95 × 191,279.48
  4. Step 4: Simplify right side
    352,424.43x = 93,028,000,416.11
  5. Step 5: Solve for x
    x = 93,028,000,416.11/352,424.43
  6. Step 6: Final answer
    x = 263,965.81

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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.