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Finding the Fourth Proportional to 372,339.06, 513,806.17 and 208,980.38

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Solution

The fourth proportional to 372,339.06, 513,806.17 and 208,980.38 is: 288,380.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,339.06 : 513,806.17 = 208,980.38 : x
  2. Step 2: Convert to fraction form
    372,339.06/513,806.17 = 208,980.38/x
  3. Step 3: Cross multiply
    372,339.06x = 513,806.17 × 208,980.38
  4. Step 4: Simplify right side
    372,339.06x = 107,375,408,652.95
  5. Step 5: Solve for x
    x = 107,375,408,652.95/372,339.06
  6. Step 6: Final answer
    x = 288,380.73

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1.5x scale

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.