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Finding the Fourth Proportional to 252,020.80, 378,031.20 and 231,900.40

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Solution

The fourth proportional to 252,020.80, 378,031.20 and 231,900.40 is: 347,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,020.80 : 378,031.20 = 231,900.40 : x
  2. Step 2: Convert to fraction form
    252,020.80/378,031.20 = 231,900.40/x
  3. Step 3: Cross multiply
    252,020.80x = 378,031.20 × 231,900.40
  4. Step 4: Simplify right side
    252,020.80x = 87,665,586,492.48
  5. Step 5: Solve for x
    x = 87,665,586,492.48/252,020.80
  6. Step 6: Final answer
    x = 347,850.60

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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.