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Finding the Fourth Proportional to 209,250.56, 288,648.96 and 128,622.08

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Solution

The fourth proportional to 209,250.56, 288,648.96 and 128,622.08 is: 177,426.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,250.56 : 288,648.96 = 128,622.08 : x
  2. Step 2: Convert to fraction form
    209,250.56/288,648.96 = 128,622.08/x
  3. Step 3: Cross multiply
    209,250.56x = 288,648.96 × 128,622.08
  4. Step 4: Simplify right side
    209,250.56x = 37,126,629,625.04
  5. Step 5: Solve for x
    x = 37,126,629,625.04/209,250.56
  6. Step 6: Final answer
    x = 177,426.67

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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.