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Finding the Fourth Proportional to 355,868,991.30, 533,883,978.15 and 192,103,232.79

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Solution

The fourth proportional to 355,868,991.30, 533,883,978.15 and 192,103,232.79 is: 288,198,299.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,868,991.30 : 533,883,978.15 = 192,103,232.79 : x
  2. Step 2: Convert to fraction form
    355,868,991.30/533,883,978.15 = 192,103,232.79/x
  3. Step 3: Cross multiply
    355,868,991.30x = 533,883,978.15 × 192,103,232.79
  4. Step 4: Simplify right side
    355,868,991.30x = 102,560,838,137,400,720
  5. Step 5: Solve for x
    x = 102,560,838,137,400,720/355,868,991.30
  6. Step 6: Final answer
    x = 288,198,299.50

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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.