Home / 228,723.28-315,638.22-139,299.28

Finding the Fourth Proportional to 228,723.28, 315,638.22 and 139,299.28

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Solution

The fourth proportional to 228,723.28, 315,638.22 and 139,299.28 is: 192,233.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,723.28 : 315,638.22 = 139,299.28 : x
  2. Step 2: Convert to fraction form
    228,723.28/315,638.22 = 139,299.28/x
  3. Step 3: Cross multiply
    228,723.28x = 315,638.22 × 139,299.28
  4. Step 4: Simplify right side
    228,723.28x = 43,968,176,786.48
  5. Step 5: Solve for x
    x = 43,968,176,786.48/228,723.28
  6. Step 6: Final answer
    x = 192,233.06

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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.