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Finding the Fourth Proportional to 335,978.21, 503,981.90 and 156,232.33

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Solution

The fourth proportional to 335,978.21, 503,981.90 and 156,232.33 is: 234,355.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,978.21 : 503,981.90 = 156,232.33 : x
  2. Step 2: Convert to fraction form
    335,978.21/503,981.90 = 156,232.33/x
  3. Step 3: Cross multiply
    335,978.21x = 503,981.90 × 156,232.33
  4. Step 4: Simplify right side
    335,978.21x = 78,738,265,059.58
  5. Step 5: Solve for x
    x = 78,738,265,059.58/335,978.21
  6. Step 6: Final answer
    x = 234,355.27

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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.