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Finding the Fourth Proportional to 247,987.90, 372,087.17 and 135,536.74

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Solution

The fourth proportional to 247,987.90, 372,087.17 and 135,536.74 is: 203,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,987.90 : 372,087.17 = 135,536.74 : x
  2. Step 2: Convert to fraction form
    247,987.90/372,087.17 = 135,536.74/x
  3. Step 3: Cross multiply
    247,987.90x = 372,087.17 × 135,536.74
  4. Step 4: Simplify right side
    247,987.90x = 50,431,483,010.98
  5. Step 5: Solve for x
    x = 50,431,483,010.98/247,987.90
  6. Step 6: Final answer
    x = 203,362.67

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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.