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Finding the Fourth Proportional to 323,744.80, 486,200.40 and 313,247.20

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Solution

The fourth proportional to 323,744.80, 486,200.40 and 313,247.20 is: 470,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,744.80 : 486,200.40 = 313,247.20 : x
  2. Step 2: Convert to fraction form
    323,744.80/486,200.40 = 313,247.20/x
  3. Step 3: Cross multiply
    323,744.80x = 486,200.40 × 313,247.20
  4. Step 4: Simplify right side
    323,744.80x = 152,300,913,938.88
  5. Step 5: Solve for x
    x = 152,300,913,938.88/323,744.80
  6. Step 6: Final answer
    x = 470,435.09

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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.