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Finding the Fourth Proportional to 379,323.66, 569,070.23 and 142,668.39

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Solution

The fourth proportional to 379,323.66, 569,070.23 and 142,668.39 is: 214,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,323.66 : 569,070.23 = 142,668.39 : x
  2. Step 2: Convert to fraction form
    379,323.66/569,070.23 = 142,668.39/x
  3. Step 3: Cross multiply
    379,323.66x = 569,070.23 × 142,668.39
  4. Step 4: Simplify right side
    379,323.66x = 81,188,332,797.69
  5. Step 5: Solve for x
    x = 81,188,332,797.69/379,323.66
  6. Step 6: Final answer
    x = 214,034.45

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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.