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Finding the Fourth Proportional to 351,456.93, 485,009.82 and 190,312.43

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Solution

The fourth proportional to 351,456.93, 485,009.82 and 190,312.43 is: 262,630.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,456.93 : 485,009.82 = 190,312.43 : x
  2. Step 2: Convert to fraction form
    351,456.93/485,009.82 = 190,312.43/x
  3. Step 3: Cross multiply
    351,456.93x = 485,009.82 × 190,312.43
  4. Step 4: Simplify right side
    351,456.93x = 92,303,394,993.01
  5. Step 5: Solve for x
    x = 92,303,394,993.01/351,456.93
  6. Step 6: Final answer
    x = 262,630.74

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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.