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Finding the Fourth Proportional to 379,270.92, 568,989.47 and 142,613.60

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Solution

The fourth proportional to 379,270.92, 568,989.47 and 142,613.60 is: 213,951.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,270.92 : 568,989.47 = 142,613.60 : x
  2. Step 2: Convert to fraction form
    379,270.92/568,989.47 = 142,613.60/x
  3. Step 3: Cross multiply
    379,270.92x = 568,989.47 × 142,613.60
  4. Step 4: Simplify right side
    379,270.92x = 81,145,636,678.79
  5. Step 5: Solve for x
    x = 81,145,636,678.79/379,270.92
  6. Step 6: Final answer
    x = 213,951.64

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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.