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Finding the Fourth Proportional to 351,730.38, 485,387.16 and 190,589.82

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Solution

The fourth proportional to 351,730.38, 485,387.16 and 190,589.82 is: 263,013.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,730.38 : 485,387.16 = 190,589.82 : x
  2. Step 2: Convert to fraction form
    351,730.38/485,387.16 = 190,589.82/x
  3. Step 3: Cross multiply
    351,730.38x = 485,387.16 × 190,589.82
  4. Step 4: Simplify right side
    351,730.38x = 92,509,851,454.71
  5. Step 5: Solve for x
    x = 92,509,851,454.71/351,730.38
  6. Step 6: Final answer
    x = 263,013.54

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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.