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Finding the Fourth Proportional to 388,922.50, 536,760.57 and 219,187.54

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Solution

The fourth proportional to 388,922.50, 536,760.57 and 219,187.54 is: 302,505.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,922.50 : 536,760.57 = 219,187.54 : x
  2. Step 2: Convert to fraction form
    388,922.50/536,760.57 = 219,187.54/x
  3. Step 3: Cross multiply
    388,922.50x = 536,760.57 × 219,187.54
  4. Step 4: Simplify right side
    388,922.50x = 117,651,228,907.30
  5. Step 5: Solve for x
    x = 117,651,228,907.30/388,922.50
  6. Step 6: Final answer
    x = 302,505.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.