Home / 211,912.30-292,269.85-139,389.68

Finding the Fourth Proportional to 211,912.30, 292,269.85 and 139,389.68

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Solution

The fourth proportional to 211,912.30, 292,269.85 and 139,389.68 is: 192,246.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,912.30 : 292,269.85 = 139,389.68 : x
  2. Step 2: Convert to fraction form
    211,912.30/292,269.85 = 139,389.68/x
  3. Step 3: Cross multiply
    211,912.30x = 292,269.85 × 139,389.68
  4. Step 4: Simplify right side
    211,912.30x = 40,739,400,865.15
  5. Step 5: Solve for x
    x = 40,739,400,865.15/211,912.30
  6. Step 6: Final answer
    x = 192,246.51

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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.