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Finding the Fourth Proportional to 265,964.40, 398,964.60 and 108,195.60

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Solution

The fourth proportional to 265,964.40, 398,964.60 and 108,195.60 is: 162,300.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,964.40 : 398,964.60 = 108,195.60 : x
  2. Step 2: Convert to fraction form
    265,964.40/398,964.60 = 108,195.60/x
  3. Step 3: Cross multiply
    265,964.40x = 398,964.60 × 108,195.60
  4. Step 4: Simplify right side
    265,964.40x = 43,166,214,275.76
  5. Step 5: Solve for x
    x = 43,166,214,275.76/265,964.40
  6. Step 6: Final answer
    x = 162,300.72

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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.