Home / 219,840.81-329,537.04-86,647.11

Finding the Fourth Proportional to 219,840.81, 329,537.04 and 86,647.11

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Solution

The fourth proportional to 219,840.81, 329,537.04 and 86,647.11 is: 129,882.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,840.81 : 329,537.04 = 86,647.11 : x
  2. Step 2: Convert to fraction form
    219,840.81/329,537.04 = 86,647.11/x
  3. Step 3: Cross multiply
    219,840.81x = 329,537.04 × 86,647.11
  4. Step 4: Simplify right side
    219,840.81x = 28,553,432,153.95
  5. Step 5: Solve for x
    x = 28,553,432,153.95/219,840.81
  6. Step 6: Final answer
    x = 129,882.31

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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.