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Finding the Fourth Proportional to 379,392.58, 569,132.61 and 126,706.60

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Solution

The fourth proportional to 379,392.58, 569,132.61 and 126,706.60 is: 190,074.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,392.58 : 569,132.61 = 126,706.60 : x
  2. Step 2: Convert to fraction form
    379,392.58/569,132.61 = 126,706.60/x
  3. Step 3: Cross multiply
    379,392.58x = 569,132.61 × 126,706.60
  4. Step 4: Simplify right side
    379,392.58x = 72,112,857,962.23
  5. Step 5: Solve for x
    x = 72,112,857,962.23/379,392.58
  6. Step 6: Final answer
    x = 190,074.51

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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.