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Finding the Fourth Proportional to 228,786.32, 315,450.60 and 196,900.40

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Solution

The fourth proportional to 228,786.32, 315,450.60 and 196,900.40 is: 271,486.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,786.32 : 315,450.60 = 196,900.40 : x
  2. Step 2: Convert to fraction form
    228,786.32/315,450.60 = 196,900.40/x
  3. Step 3: Cross multiply
    228,786.32x = 315,450.60 × 196,900.40
  4. Step 4: Simplify right side
    228,786.32x = 62,112,349,320.24
  5. Step 5: Solve for x
    x = 62,112,349,320.24/228,786.32
  6. Step 6: Final answer
    x = 271,486.29

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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.