Home / 456,103.20-684,266.16-321,429.96

Finding the Fourth Proportional to 456,103.20, 684,266.16 and 321,429.96

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Solution

The fourth proportional to 456,103.20, 684,266.16 and 321,429.96 is: 482,223.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,103.20 : 684,266.16 = 321,429.96 : x
  2. Step 2: Convert to fraction form
    456,103.20/684,266.16 = 321,429.96/x
  3. Step 3: Cross multiply
    456,103.20x = 684,266.16 × 321,429.96
  4. Step 4: Simplify right side
    456,103.20x = 219,943,644,438.15
  5. Step 5: Solve for x
    x = 219,943,644,438.15/456,103.20
  6. Step 6: Final answer
    x = 482,223.42

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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.