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Finding the Fourth Proportional to 548,366.62, 821,989.14 and 211,275.27

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Solution

The fourth proportional to 548,366.62, 821,989.14 and 211,275.27 is: 316,696.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,366.62 : 821,989.14 = 211,275.27 : x
  2. Step 2: Convert to fraction form
    548,366.62/821,989.14 = 211,275.27/x
  3. Step 3: Cross multiply
    548,366.62x = 821,989.14 × 211,275.27
  4. Step 4: Simplify right side
    548,366.62x = 173,665,977,490.57
  5. Step 5: Solve for x
    x = 173,665,977,490.57/548,366.62
  6. Step 6: Final answer
    x = 316,696.84

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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.