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Finding the Fourth Proportional to 351,805.86, 485,492.45 and 190,660.86

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Solution

The fourth proportional to 351,805.86, 485,492.45 and 190,660.86 is: 263,112.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,805.86 : 485,492.45 = 190,660.86 : x
  2. Step 2: Convert to fraction form
    351,805.86/485,492.45 = 190,660.86/x
  3. Step 3: Cross multiply
    351,805.86x = 485,492.45 × 190,660.86
  4. Step 4: Simplify right side
    351,805.86x = 92,564,407,087.20
  5. Step 5: Solve for x
    x = 92,564,407,087.20/351,805.86
  6. Step 6: Final answer
    x = 263,112.18

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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.