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Finding the Fourth Proportional to 216,400.30, 324,600.45 and 163,912.30

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Solution

The fourth proportional to 216,400.30, 324,600.45 and 163,912.30 is: 245,868.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,400.30 : 324,600.45 = 163,912.30 : x
  2. Step 2: Convert to fraction form
    216,400.30/324,600.45 = 163,912.30/x
  3. Step 3: Cross multiply
    216,400.30x = 324,600.45 × 163,912.30
  4. Step 4: Simplify right side
    216,400.30x = 53,206,006,340.54
  5. Step 5: Solve for x
    x = 53,206,006,340.54/216,400.30
  6. Step 6: Final answer
    x = 245,868.45

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1.5x scale

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.