Home / 397,423.20-548,450.46-216,138.72

Finding the Fourth Proportional to 397,423.20, 548,450.46 and 216,138.72

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Solution

The fourth proportional to 397,423.20, 548,450.46 and 216,138.72 is: 298,274.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,423.20 : 548,450.46 = 216,138.72 : x
  2. Step 2: Convert to fraction form
    397,423.20/548,450.46 = 216,138.72/x
  3. Step 3: Cross multiply
    397,423.20x = 548,450.46 × 216,138.72
  4. Step 4: Simplify right side
    397,423.20x = 118,541,380,407.81
  5. Step 5: Solve for x
    x = 118,541,380,407.81/397,423.20
  6. Step 6: Final answer
    x = 298,274.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.