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Finding the Fourth Proportional to 660,770.60, 991,193.58 and 187,418.76

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Solution

The fourth proportional to 660,770.60, 991,193.58 and 187,418.76 is: 281,138.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,770.60 : 991,193.58 = 187,418.76 : x
  2. Step 2: Convert to fraction form
    660,770.60/991,193.58 = 187,418.76/x
  3. Step 3: Cross multiply
    660,770.60x = 991,193.58 × 187,418.76
  4. Step 4: Simplify right side
    660,770.60x = 185,768,271,683.56
  5. Step 5: Solve for x
    x = 185,768,271,683.56/660,770.60
  6. Step 6: Final answer
    x = 281,138.83

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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.