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Finding the Fourth Proportional to 248,678.68, 373,128.27 and 130,321.88

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Solution

The fourth proportional to 248,678.68, 373,128.27 and 130,321.88 is: 195,540.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,678.68 : 373,128.27 = 130,321.88 : x
  2. Step 2: Convert to fraction form
    248,678.68/373,128.27 = 130,321.88/x
  3. Step 3: Cross multiply
    248,678.68x = 373,128.27 × 130,321.88
  4. Step 4: Simplify right side
    248,678.68x = 48,626,777,627.55
  5. Step 5: Solve for x
    x = 48,626,777,627.55/248,678.68
  6. Step 6: Final answer
    x = 195,540.60

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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.