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Finding the Fourth Proportional to 388,930.62, 536,704.98 and 219,175.68

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Solution

The fourth proportional to 388,930.62, 536,704.98 and 219,175.68 is: 302,451.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,930.62 : 536,704.98 = 219,175.68 : x
  2. Step 2: Convert to fraction form
    388,930.62/536,704.98 = 219,175.68/x
  3. Step 3: Cross multiply
    388,930.62x = 536,704.98 × 219,175.68
  4. Step 4: Simplify right side
    388,930.62x = 117,632,678,950.89
  5. Step 5: Solve for x
    x = 117,632,678,950.89/388,930.62
  6. Step 6: Final answer
    x = 302,451.58

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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.