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Finding the Fourth Proportional to 439,415.28, 659,064.60 and 123,897.60

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Solution

The fourth proportional to 439,415.28, 659,064.60 and 123,897.60 is: 185,829.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,415.28 : 659,064.60 = 123,897.60 : x
  2. Step 2: Convert to fraction form
    439,415.28/659,064.60 = 123,897.60/x
  3. Step 3: Cross multiply
    439,415.28x = 659,064.60 × 123,897.60
  4. Step 4: Simplify right side
    439,415.28x = 81,656,522,184.96
  5. Step 5: Solve for x
    x = 81,656,522,184.96/439,415.28
  6. Step 6: Final answer
    x = 185,829.96

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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.