Home / 352,982.67-487,157.54-209,742.81

Finding the Fourth Proportional to 352,982.67, 487,157.54 and 209,742.81

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Solution

The fourth proportional to 352,982.67, 487,157.54 and 209,742.81 is: 289,469.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,982.67 : 487,157.54 = 209,742.81 : x
  2. Step 2: Convert to fraction form
    352,982.67/487,157.54 = 209,742.81/x
  3. Step 3: Cross multiply
    352,982.67x = 487,157.54 × 209,742.81
  4. Step 4: Simplify right side
    352,982.67x = 102,177,790,303.57
  5. Step 5: Solve for x
    x = 102,177,790,303.57/352,982.67
  6. Step 6: Final answer
    x = 289,469.71

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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.