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Finding the Fourth Proportional to 323,621.80, 486,015.90 and 313,124.20

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Solution

The fourth proportional to 323,621.80, 486,015.90 and 313,124.20 is: 470,250.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,621.80 : 486,015.90 = 313,124.20 : x
  2. Step 2: Convert to fraction form
    323,621.80/486,015.90 = 313,124.20/x
  3. Step 3: Cross multiply
    323,621.80x = 486,015.90 × 313,124.20
  4. Step 4: Simplify right side
    323,621.80x = 152,183,339,874.78
  5. Step 5: Solve for x
    x = 152,183,339,874.78/323,621.80
  6. Step 6: Final answer
    x = 470,250.58

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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.