Home / 219,118.23-328,644.39-69,339.06

Finding the Fourth Proportional to 219,118.23, 328,644.39 and 69,339.06

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Solution

The fourth proportional to 219,118.23, 328,644.39 and 69,339.06 is: 103,998.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,118.23 : 328,644.39 = 69,339.06 : x
  2. Step 2: Convert to fraction form
    219,118.23/328,644.39 = 69,339.06/x
  3. Step 3: Cross multiply
    219,118.23x = 328,644.39 × 69,339.06
  4. Step 4: Simplify right side
    219,118.23x = 22,787,893,076.87
  5. Step 5: Solve for x
    x = 22,787,893,076.87/219,118.23
  6. Step 6: Final answer
    x = 103,998.16

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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.