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Finding the Fourth Proportional to 641,980.26, 963,130.50 and 192,709.44

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Solution

The fourth proportional to 641,980.26, 963,130.50 and 192,709.44 is: 289,112.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,980.26 : 963,130.50 = 192,709.44 : x
  2. Step 2: Convert to fraction form
    641,980.26/963,130.50 = 192,709.44/x
  3. Step 3: Cross multiply
    641,980.26x = 963,130.50 × 192,709.44
  4. Step 4: Simplify right side
    641,980.26x = 185,604,339,301.92
  5. Step 5: Solve for x
    x = 185,604,339,301.92/641,980.26
  6. Step 6: Final answer
    x = 289,112.22

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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.