Home / 318,945.60-478,483.20-108,604.80

Finding the Fourth Proportional to 318,945.60, 478,483.20 and 108,604.80

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Solution

The fourth proportional to 318,945.60, 478,483.20 and 108,604.80 is: 162,929.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,945.60 : 478,483.20 = 108,604.80 : x
  2. Step 2: Convert to fraction form
    318,945.60/478,483.20 = 108,604.80/x
  3. Step 3: Cross multiply
    318,945.60x = 478,483.20 × 108,604.80
  4. Step 4: Simplify right side
    318,945.60x = 51,965,572,239.36
  5. Step 5: Solve for x
    x = 51,965,572,239.36/318,945.60
  6. Step 6: Final answer
    x = 162,929.27

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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.