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Finding the Fourth Proportional to 395,348.60, 593,059.35 and 129,110.51

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Solution

The fourth proportional to 395,348.60, 593,059.35 and 129,110.51 is: 193,677.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,348.60 : 593,059.35 = 129,110.51 : x
  2. Step 2: Convert to fraction form
    395,348.60/593,059.35 = 129,110.51/x
  3. Step 3: Cross multiply
    395,348.60x = 593,059.35 × 129,110.51
  4. Step 4: Simplify right side
    395,348.60x = 76,570,195,138.77
  5. Step 5: Solve for x
    x = 76,570,195,138.77/395,348.60
  6. Step 6: Final answer
    x = 193,677.67

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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.