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Finding the Fourth Proportional to 288,982.62, 398,804.31 and 161,658.72

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Solution

The fourth proportional to 288,982.62, 398,804.31 and 161,658.72 is: 223,093.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,982.62 : 398,804.31 = 161,658.72 : x
  2. Step 2: Convert to fraction form
    288,982.62/398,804.31 = 161,658.72/x
  3. Step 3: Cross multiply
    288,982.62x = 398,804.31 × 161,658.72
  4. Step 4: Simplify right side
    288,982.62x = 64,470,194,285.08
  5. Step 5: Solve for x
    x = 64,470,194,285.08/288,982.62
  6. Step 6: Final answer
    x = 223,093.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.