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Finding the Fourth Proportional to 323,715.40, 485,573.10 and 321,641.80

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Solution

The fourth proportional to 323,715.40, 485,573.10 and 321,641.80 is: 482,462.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,715.40 : 485,573.10 = 321,641.80 : x
  2. Step 2: Convert to fraction form
    323,715.40/485,573.10 = 321,641.80/x
  3. Step 3: Cross multiply
    323,715.40x = 485,573.10 × 321,641.80
  4. Step 4: Simplify right side
    323,715.40x = 156,180,605,915.58
  5. Step 5: Solve for x
    x = 156,180,605,915.58/323,715.40
  6. Step 6: Final answer
    x = 482,462.70

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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.