Home / 379,540.34-569,339.91-126,821.71

Finding the Fourth Proportional to 379,540.34, 569,339.91 and 126,821.71

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Solution

The fourth proportional to 379,540.34, 569,339.91 and 126,821.71 is: 190,242.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,540.34 : 569,339.91 = 126,821.71 : x
  2. Step 2: Convert to fraction form
    379,540.34/569,339.91 = 126,821.71/x
  3. Step 3: Cross multiply
    379,540.34x = 569,339.91 × 126,821.71
  4. Step 4: Simplify right side
    379,540.34x = 72,204,660,957.45
  5. Step 5: Solve for x
    x = 72,204,660,957.45/379,540.34
  6. Step 6: Final answer
    x = 190,242.39

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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.