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Finding the Fourth Proportional to 340,892.70, 511,339.05 and 151,279.80

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Solution

The fourth proportional to 340,892.70, 511,339.05 and 151,279.80 is: 226,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,892.70 : 511,339.05 = 151,279.80 : x
  2. Step 2: Convert to fraction form
    340,892.70/511,339.05 = 151,279.80/x
  3. Step 3: Cross multiply
    340,892.70x = 511,339.05 × 151,279.80
  4. Step 4: Simplify right side
    340,892.70x = 77,355,269,216.19
  5. Step 5: Solve for x
    x = 77,355,269,216.19/340,892.70
  6. Step 6: Final answer
    x = 226,919.70

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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.