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Finding the Fourth Proportional to 647,618.20, 971,427.30 and 204,328.60

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Solution

The fourth proportional to 647,618.20, 971,427.30 and 204,328.60 is: 306,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,618.20 : 971,427.30 = 204,328.60 : x
  2. Step 2: Convert to fraction form
    647,618.20/971,427.30 = 204,328.60/x
  3. Step 3: Cross multiply
    647,618.20x = 971,427.30 × 204,328.60
  4. Step 4: Simplify right side
    647,618.20x = 198,490,380,210.78
  5. Step 5: Solve for x
    x = 198,490,380,210.78/647,618.20
  6. Step 6: Final answer
    x = 306,492.90

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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.