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Finding the Fourth Proportional to 248,661.60, 372,992.40 and 209,295.60

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Solution

The fourth proportional to 248,661.60, 372,992.40 and 209,295.60 is: 313,943.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,661.60 : 372,992.40 = 209,295.60 : x
  2. Step 2: Convert to fraction form
    248,661.60/372,992.40 = 209,295.60/x
  3. Step 3: Cross multiply
    248,661.60x = 372,992.40 × 209,295.60
  4. Step 4: Simplify right side
    248,661.60x = 78,065,668,153.44
  5. Step 5: Solve for x
    x = 78,065,668,153.44/248,661.60
  6. Step 6: Final answer
    x = 313,943.40

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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.