Home / 216,628.20-324,942.30-145,769.40

Finding the Fourth Proportional to 216,628.20, 324,942.30 and 145,769.40

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Solution

The fourth proportional to 216,628.20, 324,942.30 and 145,769.40 is: 218,654.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,628.20 : 324,942.30 = 145,769.40 : x
  2. Step 2: Convert to fraction form
    216,628.20/324,942.30 = 145,769.40/x
  3. Step 3: Cross multiply
    216,628.20x = 324,942.30 × 145,769.40
  4. Step 4: Simplify right side
    216,628.20x = 47,366,644,105.62
  5. Step 5: Solve for x
    x = 47,366,644,105.62/216,628.20
  6. Step 6: Final answer
    x = 218,654.10

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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.