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Finding the Fourth Proportional to 492,689.03, 738,803.84 and 255,968.15

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Solution

The fourth proportional to 492,689.03, 738,803.84 and 255,968.15 is: 383,832.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,689.03 : 738,803.84 = 255,968.15 : x
  2. Step 2: Convert to fraction form
    492,689.03/738,803.84 = 255,968.15/x
  3. Step 3: Cross multiply
    492,689.03x = 738,803.84 × 255,968.15
  4. Step 4: Simplify right side
    492,689.03x = 189,110,247,163.84
  5. Step 5: Solve for x
    x = 189,110,247,163.84/492,689.03
  6. Step 6: Final answer
    x = 383,832.88

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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.