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Finding the Fourth Proportional to 355,396.32, 490,399.92 and 228,244.32

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Solution

The fourth proportional to 355,396.32, 490,399.92 and 228,244.32 is: 314,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,396.32 : 490,399.92 = 228,244.32 : x
  2. Step 2: Convert to fraction form
    355,396.32/490,399.92 = 228,244.32/x
  3. Step 3: Cross multiply
    355,396.32x = 490,399.92 × 228,244.32
  4. Step 4: Simplify right side
    355,396.32x = 111,930,996,268.45
  5. Step 5: Solve for x
    x = 111,930,996,268.45/355,396.32
  6. Step 6: Final answer
    x = 314,946.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.