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Finding the Fourth Proportional to 216,529.80, 324,794.70 and 157,086.60

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Solution

The fourth proportional to 216,529.80, 324,794.70 and 157,086.60 is: 235,629.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,529.80 : 324,794.70 = 157,086.60 : x
  2. Step 2: Convert to fraction form
    216,529.80/324,794.70 = 157,086.60/x
  3. Step 3: Cross multiply
    216,529.80x = 324,794.70 × 157,086.60
  4. Step 4: Simplify right side
    216,529.80x = 51,020,895,121.02
  5. Step 5: Solve for x
    x = 51,020,895,121.02/216,529.80
  6. Step 6: Final answer
    x = 235,629.90

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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.