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Finding the Fourth Proportional to 548,069.68, 821,544.18 and 310,911.40

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Solution

The fourth proportional to 548,069.68, 821,544.18 and 310,911.40 is: 466,049.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,069.68 : 821,544.18 = 310,911.40 : x
  2. Step 2: Convert to fraction form
    548,069.68/821,544.18 = 310,911.40/x
  3. Step 3: Cross multiply
    548,069.68x = 821,544.18 × 310,911.40
  4. Step 4: Simplify right side
    548,069.68x = 255,427,451,165.65
  5. Step 5: Solve for x
    x = 255,427,451,165.65/548,069.68
  6. Step 6: Final answer
    x = 466,049.23

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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.