Home / 219,629.34-303,237.27-139,128.30

Finding the Fourth Proportional to 219,629.34, 303,237.27 and 139,128.30

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Solution

The fourth proportional to 219,629.34, 303,237.27 and 139,128.30 is: 192,091.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,629.34 : 303,237.27 = 139,128.30 : x
  2. Step 2: Convert to fraction form
    219,629.34/303,237.27 = 139,128.30/x
  3. Step 3: Cross multiply
    219,629.34x = 303,237.27 × 139,128.30
  4. Step 4: Simplify right side
    219,629.34x = 42,188,885,871.74
  5. Step 5: Solve for x
    x = 42,188,885,871.74/219,629.34
  6. Step 6: Final answer
    x = 192,091.30

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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.