Home / 220,218.30-303,886.69-129,556.69

Finding the Fourth Proportional to 220,218.30, 303,886.69 and 129,556.69

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Solution

The fourth proportional to 220,218.30, 303,886.69 and 129,556.69 is: 178,779.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,218.30 : 303,886.69 = 129,556.69 : x
  2. Step 2: Convert to fraction form
    220,218.30/303,886.69 = 129,556.69/x
  3. Step 3: Cross multiply
    220,218.30x = 303,886.69 × 129,556.69
  4. Step 4: Simplify right side
    220,218.30x = 39,370,552,607.85
  5. Step 5: Solve for x
    x = 39,370,552,607.85/220,218.30
  6. Step 6: Final answer
    x = 178,779.66

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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.