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Finding the Fourth Proportional to 554,999.80, 765,902.15 and 300,351.02

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Solution

The fourth proportional to 554,999.80, 765,902.15 and 300,351.02 is: 414,485.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,999.80 : 765,902.15 = 300,351.02 : x
  2. Step 2: Convert to fraction form
    554,999.80/765,902.15 = 300,351.02/x
  3. Step 3: Cross multiply
    554,999.80x = 765,902.15 × 300,351.02
  4. Step 4: Simplify right side
    554,999.80x = 230,039,491,972.69
  5. Step 5: Solve for x
    x = 230,039,491,972.69/554,999.80
  6. Step 6: Final answer
    x = 414,485.72

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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.