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Finding the Fourth Proportional to 274,534.20, 411,801.30 and 163,942.20

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Solution

The fourth proportional to 274,534.20, 411,801.30 and 163,942.20 is: 245,913.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,534.20 : 411,801.30 = 163,942.20 : x
  2. Step 2: Convert to fraction form
    274,534.20/411,801.30 = 163,942.20/x
  3. Step 3: Cross multiply
    274,534.20x = 411,801.30 × 163,942.20
  4. Step 4: Simplify right side
    274,534.20x = 67,511,611,084.86
  5. Step 5: Solve for x
    x = 67,511,611,084.86/274,534.20
  6. Step 6: Final answer
    x = 245,913.30

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1.5x scale

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.