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Finding the Fourth Proportional to 482,205.61, 721,889.51 and 321,883.89

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Solution

The fourth proportional to 482,205.61, 721,889.51 and 321,883.89 is: 481,878.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,205.61 : 721,889.51 = 321,883.89 : x
  2. Step 2: Convert to fraction form
    482,205.61/721,889.51 = 321,883.89/x
  3. Step 3: Cross multiply
    482,205.61x = 721,889.51 × 321,883.89
  4. Step 4: Simplify right side
    482,205.61x = 232,364,603,628.99
  5. Step 5: Solve for x
    x = 232,364,603,628.99/482,205.61
  6. Step 6: Final answer
    x = 481,878.68

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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.