Home / 211,816.88-292,234.20-135,380.72

Finding the Fourth Proportional to 211,816.88, 292,234.20 and 135,380.72

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Solution

The fourth proportional to 211,816.88, 292,234.20 and 135,380.72 is: 186,778.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,816.88 : 292,234.20 = 135,380.72 : x
  2. Step 2: Convert to fraction form
    211,816.88/292,234.20 = 135,380.72/x
  3. Step 3: Cross multiply
    211,816.88x = 292,234.20 × 135,380.72
  4. Step 4: Simplify right side
    211,816.88x = 39,562,874,943.45
  5. Step 5: Solve for x
    x = 39,562,874,943.45/211,816.88
  6. Step 6: Final answer
    x = 186,778.67

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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.