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Finding the Fourth Proportional to 254,463.20, 381,694.80 and 252,130.40

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Solution

The fourth proportional to 254,463.20, 381,694.80 and 252,130.40 is: 378,195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,463.20 : 381,694.80 = 252,130.40 : x
  2. Step 2: Convert to fraction form
    254,463.20/381,694.80 = 252,130.40/x
  3. Step 3: Cross multiply
    254,463.20x = 381,694.80 × 252,130.40
  4. Step 4: Simplify right side
    254,463.20x = 96,236,862,601.92
  5. Step 5: Solve for x
    x = 96,236,862,601.92/254,463.20
  6. Step 6: Final answer
    x = 378,195.60

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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.