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Finding the Fourth Proportional to 534,745.40, 801,729.30 and 219,039.80

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Solution

The fourth proportional to 534,745.40, 801,729.30 and 219,039.80 is: 328,400.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,745.40 : 801,729.30 = 219,039.80 : x
  2. Step 2: Convert to fraction form
    534,745.40/801,729.30 = 219,039.80/x
  3. Step 3: Cross multiply
    534,745.40x = 801,729.30 × 219,039.80
  4. Step 4: Simplify right side
    534,745.40x = 175,610,625,526.14
  5. Step 5: Solve for x
    x = 175,610,625,526.14/534,745.40
  6. Step 6: Final answer
    x = 328,400.44

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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.