Home / 219,705.84-329,733.72-86,619.60

Finding the Fourth Proportional to 219,705.84, 329,733.72 and 86,619.60

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Solution

The fourth proportional to 219,705.84, 329,733.72 and 86,619.60 is: 129,998.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,705.84 : 329,733.72 = 86,619.60 : x
  2. Step 2: Convert to fraction form
    219,705.84/329,733.72 = 86,619.60/x
  3. Step 3: Cross multiply
    219,705.84x = 329,733.72 × 86,619.60
  4. Step 4: Simplify right side
    219,705.84x = 28,561,402,932.91
  5. Step 5: Solve for x
    x = 28,561,402,932.91/219,705.84
  6. Step 6: Final answer
    x = 129,998.38

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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.