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Finding the Fourth Proportional to 216,221.50, 324,479.88 and 75,980.08

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Solution

The fourth proportional to 216,221.50, 324,479.88 and 75,980.08 is: 114,022.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,221.50 : 324,479.88 = 75,980.08 : x
  2. Step 2: Convert to fraction form
    216,221.50/324,479.88 = 75,980.08/x
  3. Step 3: Cross multiply
    216,221.50x = 324,479.88 × 75,980.08
  4. Step 4: Simplify right side
    216,221.50x = 24,654,007,240.79
  5. Step 5: Solve for x
    x = 24,654,007,240.79/216,221.50
  6. Step 6: Final answer
    x = 114,022.00

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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.