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Finding the Fourth Proportional to 339,883.70, 509,601.98 and 190,139.81

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Solution

The fourth proportional to 339,883.70, 509,601.98 and 190,139.81 is: 285,084.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,883.70 : 509,601.98 = 190,139.81 : x
  2. Step 2: Convert to fraction form
    339,883.70/509,601.98 = 190,139.81/x
  3. Step 3: Cross multiply
    339,883.70x = 509,601.98 × 190,139.81
  4. Step 4: Simplify right side
    339,883.70x = 96,895,621,580.16
  5. Step 5: Solve for x
    x = 96,895,621,580.16/339,883.70
  6. Step 6: Final answer
    x = 285,084.64

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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.