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Finding the Fourth Proportional to 543,350.80, 815,640.60 and 321,859.60

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Solution

The fourth proportional to 543,350.80, 815,640.60 and 321,859.60 is: 483,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,350.80 : 815,640.60 = 321,859.60 : x
  2. Step 2: Convert to fraction form
    543,350.80/815,640.60 = 321,859.60/x
  3. Step 3: Cross multiply
    543,350.80x = 815,640.60 × 321,859.60
  4. Step 4: Simplify right side
    543,350.80x = 262,521,757,259.76
  5. Step 5: Solve for x
    x = 262,521,757,259.76/543,350.80
  6. Step 6: Final answer
    x = 483,153.35

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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.