Home / 318,877.47-478,375.05-131,903.55

Finding the Fourth Proportional to 318,877.47, 478,375.05 and 131,903.55

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Solution

The fourth proportional to 318,877.47, 478,375.05 and 131,903.55 is: 197,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,877.47 : 478,375.05 = 131,903.55 : x
  2. Step 2: Convert to fraction form
    318,877.47/478,375.05 = 131,903.55/x
  3. Step 3: Cross multiply
    318,877.47x = 478,375.05 × 131,903.55
  4. Step 4: Simplify right side
    318,877.47x = 63,099,367,326.43
  5. Step 5: Solve for x
    x = 63,099,367,326.43/318,877.47
  6. Step 6: Final answer
    x = 197,879.67

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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.