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Finding the Fourth Proportional to 252,037.20, 378,055.80 and 217,822.80

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Solution

The fourth proportional to 252,037.20, 378,055.80 and 217,822.80 is: 326,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,037.20 : 378,055.80 = 217,822.80 : x
  2. Step 2: Convert to fraction form
    252,037.20/378,055.80 = 217,822.80/x
  3. Step 3: Cross multiply
    252,037.20x = 378,055.80 × 217,822.80
  4. Step 4: Simplify right side
    252,037.20x = 82,349,172,912.24
  5. Step 5: Solve for x
    x = 82,349,172,912.24/252,037.20
  6. Step 6: Final answer
    x = 326,734.20

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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.