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Finding the Fourth Proportional to 317,906.72, 476,982.36 and 140,288.24

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Solution

The fourth proportional to 317,906.72, 476,982.36 and 140,288.24 is: 210,486.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,906.72 : 476,982.36 = 140,288.24 : x
  2. Step 2: Convert to fraction form
    317,906.72/476,982.36 = 140,288.24/x
  3. Step 3: Cross multiply
    317,906.72x = 476,982.36 × 140,288.24
  4. Step 4: Simplify right side
    317,906.72x = 66,915,015,795.45
  5. Step 5: Solve for x
    x = 66,915,015,795.45/317,906.72
  6. Step 6: Final answer
    x = 210,486.32

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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.