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Finding the Fourth Proportional to 309,604.08, 427,258.44 and 173,668.20

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Solution

The fourth proportional to 309,604.08, 427,258.44 and 173,668.20 is: 239,664.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,604.08 : 427,258.44 = 173,668.20 : x
  2. Step 2: Convert to fraction form
    309,604.08/427,258.44 = 173,668.20/x
  3. Step 3: Cross multiply
    309,604.08x = 427,258.44 × 173,668.20
  4. Step 4: Simplify right side
    309,604.08x = 74,201,204,209.61
  5. Step 5: Solve for x
    x = 74,201,204,209.61/309,604.08
  6. Step 6: Final answer
    x = 239,664.81

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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.