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Finding the Fourth Proportional to 260,321.40, 390,384.90 and 181,200.60

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Solution

The fourth proportional to 260,321.40, 390,384.90 and 181,200.60 is: 271,733.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,321.40 : 390,384.90 = 181,200.60 : x
  2. Step 2: Convert to fraction form
    260,321.40/390,384.90 = 181,200.60/x
  3. Step 3: Cross multiply
    260,321.40x = 390,384.90 × 181,200.60
  4. Step 4: Simplify right side
    260,321.40x = 70,737,978,110.94
  5. Step 5: Solve for x
    x = 70,737,978,110.94/260,321.40
  6. Step 6: Final answer
    x = 271,733.24

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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.