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Finding the Fourth Proportional to 351,873.82, 485,586.74 and 190,728.72

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Solution

The fourth proportional to 351,873.82, 485,586.74 and 190,728.72 is: 263,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,873.82 : 485,586.74 = 190,728.72 : x
  2. Step 2: Convert to fraction form
    351,873.82/485,586.74 = 190,728.72/x
  3. Step 3: Cross multiply
    351,873.82x = 485,586.74 × 190,728.72
  4. Step 4: Simplify right side
    351,873.82x = 92,615,337,369.17
  5. Step 5: Solve for x
    x = 92,615,337,369.17/351,873.82
  6. Step 6: Final answer
    x = 263,206.10

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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.