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Finding the Fourth Proportional to 235,485.34, 324,978.32 and 134,902.78

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Solution

The fourth proportional to 235,485.34, 324,978.32 and 134,902.78 is: 186,170.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,485.34 : 324,978.32 = 134,902.78 : x
  2. Step 2: Convert to fraction form
    235,485.34/324,978.32 = 134,902.78/x
  3. Step 3: Cross multiply
    235,485.34x = 324,978.32 × 134,902.78
  4. Step 4: Simplify right side
    235,485.34x = 43,840,477,320.77
  5. Step 5: Solve for x
    x = 43,840,477,320.77/235,485.34
  6. Step 6: Final answer
    x = 186,170.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.