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Finding the Fourth Proportional to 248,271.80, 372,409.86 and 70,778.60

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Solution

The fourth proportional to 248,271.80, 372,409.86 and 70,778.60 is: 106,168.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,271.80 : 372,409.86 = 70,778.60 : x
  2. Step 2: Convert to fraction form
    248,271.80/372,409.86 = 70,778.60/x
  3. Step 3: Cross multiply
    248,271.80x = 372,409.86 × 70,778.60
  4. Step 4: Simplify right side
    248,271.80x = 26,358,648,517.00
  5. Step 5: Solve for x
    x = 26,358,648,517.00/248,271.80
  6. Step 6: Final answer
    x = 106,168.52

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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.