Home / 753,289.22-1,129,991.56-213,536.45

Finding the Fourth Proportional to 753,289.22, 1,129,991.56 and 213,536.45

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Solution

The fourth proportional to 753,289.22, 1,129,991.56 and 213,536.45 is: 320,321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,289.22 : 1,129,991.56 = 213,536.45 : x
  2. Step 2: Convert to fraction form
    753,289.22/1,129,991.56 = 213,536.45/x
  3. Step 3: Cross multiply
    753,289.22x = 1,129,991.56 × 213,536.45
  4. Step 4: Simplify right side
    753,289.22x = 241,294,389,744.64
  5. Step 5: Solve for x
    x = 241,294,389,744.64/753,289.22
  6. Step 6: Final answer
    x = 320,321.05

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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.