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Finding the Fourth Proportional to 397,451.52, 548,485.44 and 216,165.12

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Solution

The fourth proportional to 397,451.52, 548,485.44 and 216,165.12 is: 298,309.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,451.52 : 548,485.44 = 216,165.12 : x
  2. Step 2: Convert to fraction form
    397,451.52/548,485.44 = 216,165.12/x
  3. Step 3: Cross multiply
    397,451.52x = 548,485.44 × 216,165.12
  4. Step 4: Simplify right side
    397,451.52x = 118,563,420,955.85
  5. Step 5: Solve for x
    x = 118,563,420,955.85/397,451.52
  6. Step 6: Final answer
    x = 298,309.14

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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.