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Finding the Fourth Proportional to 486,821.15, 730,300.83 and 149,889.80

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Solution

The fourth proportional to 486,821.15, 730,300.83 and 149,889.80 is: 224,855.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,821.15 : 730,300.83 = 149,889.80 : x
  2. Step 2: Convert to fraction form
    486,821.15/730,300.83 = 149,889.80/x
  3. Step 3: Cross multiply
    486,821.15x = 730,300.83 × 149,889.80
  4. Step 4: Simplify right side
    486,821.15x = 109,464,647,174.29
  5. Step 5: Solve for x
    x = 109,464,647,174.29/486,821.15
  6. Step 6: Final answer
    x = 224,855.98

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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.