Home / 318,923.90-478,213.05-131,954.30

Finding the Fourth Proportional to 318,923.90, 478,213.05 and 131,954.30

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Solution

The fourth proportional to 318,923.90, 478,213.05 and 131,954.30 is: 197,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,923.90 : 478,213.05 = 131,954.30 : x
  2. Step 2: Convert to fraction form
    318,923.90/478,213.05 = 131,954.30/x
  3. Step 3: Cross multiply
    318,923.90x = 478,213.05 × 131,954.30
  4. Step 4: Simplify right side
    318,923.90x = 63,102,268,263.62
  5. Step 5: Solve for x
    x = 63,102,268,263.62/318,923.90
  6. Step 6: Final answer
    x = 197,859.95

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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.