Home / 217,628.28-326,379.12-91,265.16

Finding the Fourth Proportional to 217,628.28, 326,379.12 and 91,265.16

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Solution

The fourth proportional to 217,628.28, 326,379.12 and 91,265.16 is: 136,871.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,628.28 : 326,379.12 = 91,265.16 : x
  2. Step 2: Convert to fraction form
    217,628.28/326,379.12 = 91,265.16/x
  3. Step 3: Cross multiply
    217,628.28x = 326,379.12 × 91,265.16
  4. Step 4: Simplify right side
    217,628.28x = 29,787,042,607.46
  5. Step 5: Solve for x
    x = 29,787,042,607.46/217,628.28
  6. Step 6: Final answer
    x = 136,871.19

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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.