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Finding the Fourth Proportional to 271,520.40, 407,280.60 and 187,539.60

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Solution

The fourth proportional to 271,520.40, 407,280.60 and 187,539.60 is: 281,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,520.40 : 407,280.60 = 187,539.60 : x
  2. Step 2: Convert to fraction form
    271,520.40/407,280.60 = 187,539.60/x
  3. Step 3: Cross multiply
    271,520.40x = 407,280.60 × 187,539.60
  4. Step 4: Simplify right side
    271,520.40x = 76,381,240,811.76
  5. Step 5: Solve for x
    x = 76,381,240,811.76/271,520.40
  6. Step 6: Final answer
    x = 281,309.40

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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.