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Finding the Fourth Proportional to 313,937.40, 470,906.10 and 166,481.40

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Solution

The fourth proportional to 313,937.40, 470,906.10 and 166,481.40 is: 249,722.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,937.40 : 470,906.10 = 166,481.40 : x
  2. Step 2: Convert to fraction form
    313,937.40/470,906.10 = 166,481.40/x
  3. Step 3: Cross multiply
    313,937.40x = 470,906.10 × 166,481.40
  4. Step 4: Simplify right side
    313,937.40x = 78,397,106,796.54
  5. Step 5: Solve for x
    x = 78,397,106,796.54/313,937.40
  6. Step 6: Final answer
    x = 249,722.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.