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Finding the Fourth Proportional to 379,394.58, 569,135.61 and 126,708.60

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Solution

The fourth proportional to 379,394.58, 569,135.61 and 126,708.60 is: 190,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,394.58 : 569,135.61 = 126,708.60 : x
  2. Step 2: Convert to fraction form
    379,394.58/569,135.61 = 126,708.60/x
  3. Step 3: Cross multiply
    379,394.58x = 569,135.61 × 126,708.60
  4. Step 4: Simplify right side
    379,394.58x = 72,114,376,353.25
  5. Step 5: Solve for x
    x = 72,114,376,353.25/379,394.58
  6. Step 6: Final answer
    x = 190,077.51

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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.