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Finding the Fourth Proportional to 351,700.92, 485,317.71 and 198,752.40

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Solution

The fourth proportional to 351,700.92, 485,317.71 and 198,752.40 is: 274,261.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,700.92 : 485,317.71 = 198,752.40 : x
  2. Step 2: Convert to fraction form
    351,700.92/485,317.71 = 198,752.40/x
  3. Step 3: Cross multiply
    351,700.92x = 485,317.71 × 198,752.40
  4. Step 4: Simplify right side
    351,700.92x = 96,458,059,625.00
  5. Step 5: Solve for x
    x = 96,458,059,625.00/351,700.92
  6. Step 6: Final answer
    x = 274,261.61

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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.