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Finding the Fourth Proportional to 324,885.20, 487,788.60 and 200,469.20

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Solution

The fourth proportional to 324,885.20, 487,788.60 and 200,469.20 is: 300,988.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,885.20 : 487,788.60 = 200,469.20 : x
  2. Step 2: Convert to fraction form
    324,885.20/487,788.60 = 200,469.20/x
  3. Step 3: Cross multiply
    324,885.20x = 487,788.60 × 200,469.20
  4. Step 4: Simplify right side
    324,885.20x = 97,786,590,411.12
  5. Step 5: Solve for x
    x = 97,786,590,411.12/324,885.20
  6. Step 6: Final answer
    x = 300,988.13

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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.