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Finding the Fourth Proportional to 210,222.80, 315,334.20 and 163,221.20

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Solution

The fourth proportional to 210,222.80, 315,334.20 and 163,221.20 is: 244,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,222.80 : 315,334.20 = 163,221.20 : x
  2. Step 2: Convert to fraction form
    210,222.80/315,334.20 = 163,221.20/x
  3. Step 3: Cross multiply
    210,222.80x = 315,334.20 × 163,221.20
  4. Step 4: Simplify right side
    210,222.80x = 51,469,226,525.04
  5. Step 5: Solve for x
    x = 51,469,226,525.04/210,222.80
  6. Step 6: Final answer
    x = 244,831.80

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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.