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Finding the Fourth Proportional to 397,497.60, 548,555.72 and 216,219.22

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Solution

The fourth proportional to 397,497.60, 548,555.72 and 216,219.22 is: 298,387.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,497.60 : 548,555.72 = 216,219.22 : x
  2. Step 2: Convert to fraction form
    397,497.60/548,555.72 = 216,219.22/x
  3. Step 3: Cross multiply
    397,497.60x = 548,555.72 × 216,219.22
  4. Step 4: Simplify right side
    397,497.60x = 118,608,287,452.45
  5. Step 5: Solve for x
    x = 118,608,287,452.45/397,497.60
  6. Step 6: Final answer
    x = 298,387.43

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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.