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Finding the Fourth Proportional to 209,201.90, 288,698.99 and 113,708.34

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Solution

The fourth proportional to 209,201.90, 288,698.99 and 113,708.34 is: 156,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,201.90 : 288,698.99 = 113,708.34 : x
  2. Step 2: Convert to fraction form
    209,201.90/288,698.99 = 113,708.34/x
  3. Step 3: Cross multiply
    209,201.90x = 288,698.99 × 113,708.34
  4. Step 4: Simplify right side
    209,201.90x = 32,827,482,344.03
  5. Step 5: Solve for x
    x = 32,827,482,344.03/209,201.90
  6. Step 6: Final answer
    x = 156,917.71

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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.