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Finding the Fourth Proportional to 379,391.58, 569,131.11 and 126,705.60

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Solution

The fourth proportional to 379,391.58, 569,131.11 and 126,705.60 is: 190,073.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,391.58 : 569,131.11 = 126,705.60 : x
  2. Step 2: Convert to fraction form
    379,391.58/569,131.11 = 126,705.60/x
  3. Step 3: Cross multiply
    379,391.58x = 569,131.11 × 126,705.60
  4. Step 4: Simplify right side
    379,391.58x = 72,112,098,771.22
  5. Step 5: Solve for x
    x = 72,112,098,771.22/379,391.58
  6. Step 6: Final answer
    x = 190,073.01

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1.5x scale

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.