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Finding the Fourth Proportional to 340,879.20, 511,318.80 and 151,266.30

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Solution

The fourth proportional to 340,879.20, 511,318.80 and 151,266.30 is: 226,899.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,879.20 : 511,318.80 = 151,266.30 : x
  2. Step 2: Convert to fraction form
    340,879.20/511,318.80 = 151,266.30/x
  3. Step 3: Cross multiply
    340,879.20x = 511,318.80 × 151,266.30
  4. Step 4: Simplify right side
    340,879.20x = 77,345,302,996.44
  5. Step 5: Solve for x
    x = 77,345,302,996.44/340,879.20
  6. Step 6: Final answer
    x = 226,899.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.