Home / 191,780.40-288,016.20-185,559.60

Finding the Fourth Proportional to 191,780.40, 288,016.20 and 185,559.60

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Solution

The fourth proportional to 191,780.40, 288,016.20 and 185,559.60 is: 278,673.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,780.40 : 288,016.20 = 185,559.60 : x
  2. Step 2: Convert to fraction form
    191,780.40/288,016.20 = 185,559.60/x
  3. Step 3: Cross multiply
    191,780.40x = 288,016.20 × 185,559.60
  4. Step 4: Simplify right side
    191,780.40x = 53,444,170,865.52
  5. Step 5: Solve for x
    x = 53,444,170,865.52/191,780.40
  6. Step 6: Final answer
    x = 278,673.79

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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.