Home / 217,976.10-326,745.45-99,732.30

Finding the Fourth Proportional to 217,976.10, 326,745.45 and 99,732.30

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Solution

The fourth proportional to 217,976.10, 326,745.45 and 99,732.30 is: 149,498.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,976.10 : 326,745.45 = 99,732.30 : x
  2. Step 2: Convert to fraction form
    217,976.10/326,745.45 = 99,732.30/x
  3. Step 3: Cross multiply
    217,976.10x = 326,745.45 × 99,732.30
  4. Step 4: Simplify right side
    217,976.10x = 32,587,075,243.04
  5. Step 5: Solve for x
    x = 32,587,075,243.04/217,976.10
  6. Step 6: Final answer
    x = 149,498.39

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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.