Home / 217,518.39-326,293.14-91,031.28

Finding the Fourth Proportional to 217,518.39, 326,293.14 and 91,031.28

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Solution

The fourth proportional to 217,518.39, 326,293.14 and 91,031.28 is: 136,553.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,518.39 : 326,293.14 = 91,031.28 : x
  2. Step 2: Convert to fraction form
    217,518.39/326,293.14 = 91,031.28/x
  3. Step 3: Cross multiply
    217,518.39x = 326,293.14 × 91,031.28
  4. Step 4: Simplify right side
    217,518.39x = 29,702,882,189.42
  5. Step 5: Solve for x
    x = 29,702,882,189.42/217,518.39
  6. Step 6: Final answer
    x = 136,553.43

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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.