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Finding the Fourth Proportional to 398,900.40, 597,544.20 and 248,679.60

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Solution

The fourth proportional to 398,900.40, 597,544.20 and 248,679.60 is: 372,516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,900.40 : 597,544.20 = 248,679.60 : x
  2. Step 2: Convert to fraction form
    398,900.40/597,544.20 = 248,679.60/x
  3. Step 3: Cross multiply
    398,900.40x = 597,544.20 × 248,679.60
  4. Step 4: Simplify right side
    398,900.40x = 148,597,052,638.32
  5. Step 5: Solve for x
    x = 148,597,052,638.32/398,900.40
  6. Step 6: Final answer
    x = 372,516.68

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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.