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Finding the Fourth Proportional to 260,614.60, 390,630.30 and 110,829.40

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Solution

The fourth proportional to 260,614.60, 390,630.30 and 110,829.40 is: 166,120.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,614.60 : 390,630.30 = 110,829.40 : x
  2. Step 2: Convert to fraction form
    260,614.60/390,630.30 = 110,829.40/x
  3. Step 3: Cross multiply
    260,614.60x = 390,630.30 × 110,829.40
  4. Step 4: Simplify right side
    260,614.60x = 43,293,321,770.82
  5. Step 5: Solve for x
    x = 43,293,321,770.82/260,614.60
  6. Step 6: Final answer
    x = 166,120.09

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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.