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Finding the Fourth Proportional to 480,331.10, 720,745.89 and 214,029.69

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Solution

The fourth proportional to 480,331.10, 720,745.89 and 214,029.69 is: 321,155.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,331.10 : 720,745.89 = 214,029.69 : x
  2. Step 2: Convert to fraction form
    480,331.10/720,745.89 = 214,029.69/x
  3. Step 3: Cross multiply
    480,331.10x = 720,745.89 × 214,029.69
  4. Step 4: Simplify right side
    480,331.10x = 154,261,015,900.07
  5. Step 5: Solve for x
    x = 154,261,015,900.07/480,331.10
  6. Step 6: Final answer
    x = 321,155.58

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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.