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Finding the Fourth Proportional to 323,899.75, 447,124.98 and 209,234.30

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Solution

The fourth proportional to 323,899.75, 447,124.98 and 209,234.30 is: 288,835.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,899.75 : 447,124.98 = 209,234.30 : x
  2. Step 2: Convert to fraction form
    323,899.75/447,124.98 = 209,234.30/x
  3. Step 3: Cross multiply
    323,899.75x = 447,124.98 × 209,234.30
  4. Step 4: Simplify right side
    323,899.75x = 93,553,880,832.41
  5. Step 5: Solve for x
    x = 93,553,880,832.41/323,899.75
  6. Step 6: Final answer
    x = 288,835.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.