Home / 213,826.89-320,811.59-71,686.22

Finding the Fourth Proportional to 213,826.89, 320,811.59 and 71,686.22

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Solution

The fourth proportional to 213,826.89, 320,811.59 and 71,686.22 is: 107,553.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,826.89 : 320,811.59 = 71,686.22 : x
  2. Step 2: Convert to fraction form
    213,826.89/320,811.59 = 71,686.22/x
  3. Step 3: Cross multiply
    213,826.89x = 320,811.59 × 71,686.22
  4. Step 4: Simplify right side
    213,826.89x = 22,997,768,391.21
  5. Step 5: Solve for x
    x = 22,997,768,391.21/213,826.89
  6. Step 6: Final answer
    x = 107,553.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.