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Finding the Fourth Proportional to 248,618.80, 372,928.20 and 209,738.80

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Solution

The fourth proportional to 248,618.80, 372,928.20 and 209,738.80 is: 314,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,618.80 : 372,928.20 = 209,738.80 : x
  2. Step 2: Convert to fraction form
    248,618.80/372,928.20 = 209,738.80/x
  3. Step 3: Cross multiply
    248,618.80x = 372,928.20 × 209,738.80
  4. Step 4: Simplify right side
    248,618.80x = 78,217,513,154.16
  5. Step 5: Solve for x
    x = 78,217,513,154.16/248,618.80
  6. Step 6: Final answer
    x = 314,608.20

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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.