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Finding the Fourth Proportional to 216,300.80, 324,221.76 and 127,596.16

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Solution

The fourth proportional to 216,300.80, 324,221.76 and 127,596.16 is: 191,258.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,300.80 : 324,221.76 = 127,596.16 : x
  2. Step 2: Convert to fraction form
    216,300.80/324,221.76 = 127,596.16/x
  3. Step 3: Cross multiply
    216,300.80x = 324,221.76 × 127,596.16
  4. Step 4: Simplify right side
    216,300.80x = 41,369,451,564.44
  5. Step 5: Solve for x
    x = 41,369,451,564.44/216,300.80
  6. Step 6: Final answer
    x = 191,258.89

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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.