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Finding the Fourth Proportional to 464,778.90, 641,230.39 and 303,727.31

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Solution

The fourth proportional to 464,778.90, 641,230.39 and 303,727.31 is: 419,036.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,778.90 : 641,230.39 = 303,727.31 : x
  2. Step 2: Convert to fraction form
    464,778.90/641,230.39 = 303,727.31/x
  3. Step 3: Cross multiply
    464,778.90x = 641,230.39 × 303,727.31
  4. Step 4: Simplify right side
    464,778.90x = 194,759,181,444.95
  5. Step 5: Solve for x
    x = 194,759,181,444.95/464,778.90
  6. Step 6: Final answer
    x = 419,036.19

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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.