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Finding the Fourth Proportional to 281,200.20, 421,800.30 and 281,200.20

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Solution

The fourth proportional to 281,200.20, 421,800.30 and 281,200.20 is: 421,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,200.20 : 421,800.30 = 281,200.20 : x
  2. Step 2: Convert to fraction form
    281,200.20/421,800.30 = 281,200.20/x
  3. Step 3: Cross multiply
    281,200.20x = 421,800.30 × 281,200.20
  4. Step 4: Simplify right side
    281,200.20x = 118,610,328,720.06
  5. Step 5: Solve for x
    x = 118,610,328,720.06/281,200.20
  6. Step 6: Final answer
    x = 421,800.30

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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.