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Finding the Fourth Proportional to 274,051.20, 411,076.80 and 211,766.40

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Solution

The fourth proportional to 274,051.20, 411,076.80 and 211,766.40 is: 317,649.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,051.20 : 411,076.80 = 211,766.40 : x
  2. Step 2: Convert to fraction form
    274,051.20/411,076.80 = 211,766.40/x
  3. Step 3: Cross multiply
    274,051.20x = 411,076.80 × 211,766.40
  4. Step 4: Simplify right side
    274,051.20x = 87,052,254,059.52
  5. Step 5: Solve for x
    x = 87,052,254,059.52/274,051.20
  6. Step 6: Final answer
    x = 317,649.60

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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.