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Finding the Fourth Proportional to 313,650.88, 470,485.54 and 76,993.55

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Solution

The fourth proportional to 313,650.88, 470,485.54 and 76,993.55 is: 115,492.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,650.88 : 470,485.54 = 76,993.55 : x
  2. Step 2: Convert to fraction form
    313,650.88/470,485.54 = 76,993.55/x
  3. Step 3: Cross multiply
    313,650.88x = 470,485.54 × 76,993.55
  4. Step 4: Simplify right side
    313,650.88x = 36,224,351,948.27
  5. Step 5: Solve for x
    x = 36,224,351,948.27/313,650.88
  6. Step 6: Final answer
    x = 115,492.59

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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.