Home / 209,206.78-288,708.30-113,713.48

Finding the Fourth Proportional to 209,206.78, 288,708.30 and 113,713.48

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Solution

The fourth proportional to 209,206.78, 288,708.30 and 113,713.48 is: 156,926.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,206.78 : 288,708.30 = 113,713.48 : x
  2. Step 2: Convert to fraction form
    209,206.78/288,708.30 = 113,713.48/x
  3. Step 3: Cross multiply
    209,206.78x = 288,708.30 × 113,713.48
  4. Step 4: Simplify right side
    209,206.78x = 32,830,025,497.88
  5. Step 5: Solve for x
    x = 32,830,025,497.88/209,206.78
  6. Step 6: Final answer
    x = 156,926.20

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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.