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Finding the Fourth Proportional to 372,378.67, 512,270 and 326,230.49

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Solution

The fourth proportional to 372,378.67, 512,270 and 326,230.49 is: 448,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,378.67 : 512,270 = 326,230.49 : x
  2. Step 2: Convert to fraction form
    372,378.67/512,270 = 326,230.49/x
  3. Step 3: Cross multiply
    372,378.67x = 512,270 × 326,230.49
  4. Step 4: Simplify right side
    372,378.67x = 167,118,093,112.30
  5. Step 5: Solve for x
    x = 167,118,093,112.30/372,378.67
  6. Step 6: Final answer
    x = 448,785.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.