Home / 209,188.80-313,607.52-145,822.68

Finding the Fourth Proportional to 209,188.80, 313,607.52 and 145,822.68

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Solution

The fourth proportional to 209,188.80, 313,607.52 and 145,822.68 is: 218,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,188.80 : 313,607.52 = 145,822.68 : x
  2. Step 2: Convert to fraction form
    209,188.80/313,607.52 = 145,822.68/x
  3. Step 3: Cross multiply
    209,188.80x = 313,607.52 × 145,822.68
  4. Step 4: Simplify right side
    209,188.80x = 45,731,089,034.55
  5. Step 5: Solve for x
    x = 45,731,089,034.55/209,188.80
  6. Step 6: Final answer
    x = 218,611.56

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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.