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Finding the Fourth Proportional to 321,227.94, 443,128.74 and 217,827.18

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Solution

The fourth proportional to 321,227.94, 443,128.74 and 217,827.18 is: 300,489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,227.94 : 443,128.74 = 217,827.18 : x
  2. Step 2: Convert to fraction form
    321,227.94/443,128.74 = 217,827.18/x
  3. Step 3: Cross multiply
    321,227.94x = 443,128.74 × 217,827.18
  4. Step 4: Simplify right side
    321,227.94x = 96,525,482,994.30
  5. Step 5: Solve for x
    x = 96,525,482,994.30/321,227.94
  6. Step 6: Final answer
    x = 300,489.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.