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Finding the Fourth Proportional to 489,133.80, 734,065.20 and 252,354.60

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Solution

The fourth proportional to 489,133.80, 734,065.20 and 252,354.60 is: 378,719.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,133.80 : 734,065.20 = 252,354.60 : x
  2. Step 2: Convert to fraction form
    489,133.80/734,065.20 = 252,354.60/x
  3. Step 3: Cross multiply
    489,133.80x = 734,065.20 × 252,354.60
  4. Step 4: Simplify right side
    489,133.80x = 185,244,729,919.92
  5. Step 5: Solve for x
    x = 185,244,729,919.92/489,133.80
  6. Step 6: Final answer
    x = 378,719.95

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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.