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Finding the Fourth Proportional to 379,323.91, 569,070.60 and 142,668.64

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Solution

The fourth proportional to 379,323.91, 569,070.60 and 142,668.64 is: 214,034.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,323.91 : 569,070.60 = 142,668.64 : x
  2. Step 2: Convert to fraction form
    379,323.91/569,070.60 = 142,668.64/x
  3. Step 3: Cross multiply
    379,323.91x = 569,070.60 × 142,668.64
  4. Step 4: Simplify right side
    379,323.91x = 81,188,528,565.98
  5. Step 5: Solve for x
    x = 81,188,528,565.98/379,323.91
  6. Step 6: Final answer
    x = 214,034.83

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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.