Home / 321,787.52-481,981.12-216,137.60

Finding the Fourth Proportional to 321,787.52, 481,981.12 and 216,137.60

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Solution

The fourth proportional to 321,787.52, 481,981.12 and 216,137.60 is: 323,736.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,787.52 : 481,981.12 = 216,137.60 : x
  2. Step 2: Convert to fraction form
    321,787.52/481,981.12 = 216,137.60/x
  3. Step 3: Cross multiply
    321,787.52x = 481,981.12 × 216,137.60
  4. Step 4: Simplify right side
    321,787.52x = 104,174,242,522.11
  5. Step 5: Solve for x
    x = 104,174,242,522.11/321,787.52
  6. Step 6: Final answer
    x = 323,736.12

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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.