Home / 285,324.20-427,576.70-209,855.40

Finding the Fourth Proportional to 285,324.20, 427,576.70 and 209,855.40

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Solution

The fourth proportional to 285,324.20, 427,576.70 and 209,855.40 is: 314,481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,324.20 : 427,576.70 = 209,855.40 : x
  2. Step 2: Convert to fraction form
    285,324.20/427,576.70 = 209,855.40/x
  3. Step 3: Cross multiply
    285,324.20x = 427,576.70 × 209,855.40
  4. Step 4: Simplify right side
    285,324.20x = 89,729,279,409.18
  5. Step 5: Solve for x
    x = 89,729,279,409.18/285,324.20
  6. Step 6: Final answer
    x = 314,481.84

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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.