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Finding the Fourth Proportional to 351,464.89, 485,020.67 and 190,319.93

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Solution

The fourth proportional to 351,464.89, 485,020.67 and 190,319.93 is: 262,641.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,464.89 : 485,020.67 = 190,319.93 : x
  2. Step 2: Convert to fraction form
    351,464.89/485,020.67 = 190,319.93/x
  3. Step 3: Cross multiply
    351,464.89x = 485,020.67 × 190,319.93
  4. Step 4: Simplify right side
    351,464.89x = 92,309,098,013.65
  5. Step 5: Solve for x
    x = 92,309,098,013.65/351,464.89
  6. Step 6: Final answer
    x = 262,641.02

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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.