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Finding the Fourth Proportional to 165,281.60, 248,440.80 and 162,171.20

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Solution

The fourth proportional to 165,281.60, 248,440.80 and 162,171.20 is: 243,765.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,281.60 : 248,440.80 = 162,171.20 : x
  2. Step 2: Convert to fraction form
    165,281.60/248,440.80 = 162,171.20/x
  3. Step 3: Cross multiply
    165,281.60x = 248,440.80 × 162,171.20
  4. Step 4: Simplify right side
    165,281.60x = 40,289,942,664.96
  5. Step 5: Solve for x
    x = 40,289,942,664.96/165,281.60
  6. Step 6: Final answer
    x = 243,765.44

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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.