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Finding the Fourth Proportional to 311,903.55, 468,020.16 and 221,304.46

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Solution

The fourth proportional to 311,903.55, 468,020.16 and 221,304.46 is: 332,073.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,903.55 : 468,020.16 = 221,304.46 : x
  2. Step 2: Convert to fraction form
    311,903.55/468,020.16 = 221,304.46/x
  3. Step 3: Cross multiply
    311,903.55x = 468,020.16 × 221,304.46
  4. Step 4: Simplify right side
    311,903.55x = 103,574,946,893.62
  5. Step 5: Solve for x
    x = 103,574,946,893.62/311,903.55
  6. Step 6: Final answer
    x = 332,073.64

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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.