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Finding the Fourth Proportional to 281,143.80, 421,812.90 and 271,423.80

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Solution

The fourth proportional to 281,143.80, 421,812.90 and 271,423.80 is: 407,229.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,143.80 : 421,812.90 = 271,423.80 : x
  2. Step 2: Convert to fraction form
    281,143.80/421,812.90 = 271,423.80/x
  3. Step 3: Cross multiply
    281,143.80x = 421,812.90 × 271,423.80
  4. Step 4: Simplify right side
    281,143.80x = 114,490,060,207.02
  5. Step 5: Solve for x
    x = 114,490,060,207.02/281,143.80
  6. Step 6: Final answer
    x = 407,229.54

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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.