Home / 219,421.04-329,102.39-86,265.54

Finding the Fourth Proportional to 219,421.04, 329,102.39 and 86,265.54

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Solution

The fourth proportional to 219,421.04, 329,102.39 and 86,265.54 is: 129,386.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,421.04 : 329,102.39 = 86,265.54 : x
  2. Step 2: Convert to fraction form
    219,421.04/329,102.39 = 86,265.54/x
  3. Step 3: Cross multiply
    219,421.04x = 329,102.39 × 86,265.54
  4. Step 4: Simplify right side
    219,421.04x = 28,390,195,604.30
  5. Step 5: Solve for x
    x = 28,390,195,604.30/219,421.04
  6. Step 6: Final answer
    x = 129,386.85

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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.