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Finding the Fourth Proportional to 347,641, 479,744.60 and 188,665

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Solution

The fourth proportional to 347,641, 479,744.60 and 188,665 is: 260,357.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,641 : 479,744.60 = 188,665 : x
  2. Step 2: Convert to fraction form
    347,641/479,744.60 = 188,665/x
  3. Step 3: Cross multiply
    347,641x = 479,744.60 × 188,665
  4. Step 4: Simplify right side
    347,641x = 90,511,014,959
  5. Step 5: Solve for x
    x = 90,511,014,959/347,641
  6. Step 6: Final answer
    x = 260,357.71

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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.