Home / 209,071.43-288,519.75-113,578.35

Finding the Fourth Proportional to 209,071.43, 288,519.75 and 113,578.35

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Solution

The fourth proportional to 209,071.43, 288,519.75 and 113,578.35 is: 156,738.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,071.43 : 288,519.75 = 113,578.35 : x
  2. Step 2: Convert to fraction form
    209,071.43/288,519.75 = 113,578.35/x
  3. Step 3: Cross multiply
    209,071.43x = 288,519.75 × 113,578.35
  4. Step 4: Simplify right side
    209,071.43x = 32,769,597,368.95
  5. Step 5: Solve for x
    x = 32,769,597,368.95/209,071.43
  6. Step 6: Final answer
    x = 156,738.76

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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.