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Finding the Fourth Proportional to 439,611.06, 659,409.42 and 140,087.58

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Solution

The fourth proportional to 439,611.06, 659,409.42 and 140,087.58 is: 210,129.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,611.06 : 659,409.42 = 140,087.58 : x
  2. Step 2: Convert to fraction form
    439,611.06/659,409.42 = 140,087.58/x
  3. Step 3: Cross multiply
    439,611.06x = 659,409.42 × 140,087.58
  4. Step 4: Simplify right side
    439,611.06x = 92,375,069,877.00
  5. Step 5: Solve for x
    x = 92,375,069,877.00/439,611.06
  6. Step 6: Final answer
    x = 210,129.09

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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.