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Finding the Fourth Proportional to 321,787.10, 482,525.13 and 188,710.58

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Solution

The fourth proportional to 321,787.10, 482,525.13 and 188,710.58 is: 282,974.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,787.10 : 482,525.13 = 188,710.58 : x
  2. Step 2: Convert to fraction form
    321,787.10/482,525.13 = 188,710.58/x
  3. Step 3: Cross multiply
    321,787.10x = 482,525.13 × 188,710.58
  4. Step 4: Simplify right side
    321,787.10x = 91,057,597,146.88
  5. Step 5: Solve for x
    x = 91,057,597,146.88/321,787.10
  6. Step 6: Final answer
    x = 282,974.67

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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.