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Finding the Fourth Proportional to 281,200.70, 421,801.05 and 81,527.60

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Solution

The fourth proportional to 281,200.70, 421,801.05 and 81,527.60 is: 122,291.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,200.70 : 421,801.05 = 81,527.60 : x
  2. Step 2: Convert to fraction form
    281,200.70/421,801.05 = 81,527.60/x
  3. Step 3: Cross multiply
    281,200.70x = 421,801.05 × 81,527.60
  4. Step 4: Simplify right side
    281,200.70x = 34,388,427,283.98
  5. Step 5: Solve for x
    x = 34,388,427,283.98/281,200.70
  6. Step 6: Final answer
    x = 122,291.40

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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.