Home / 219,835.49-329,531.70-86,664.20

Finding the Fourth Proportional to 219,835.49, 329,531.70 and 86,664.20

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Solution

The fourth proportional to 219,835.49, 329,531.70 and 86,664.20 is: 129,908.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,835.49 : 329,531.70 = 86,664.20 : x
  2. Step 2: Convert to fraction form
    219,835.49/329,531.70 = 86,664.20/x
  3. Step 3: Cross multiply
    219,835.49x = 329,531.70 × 86,664.20
  4. Step 4: Simplify right side
    219,835.49x = 28,558,601,155.14
  5. Step 5: Solve for x
    x = 28,558,601,155.14/219,835.49
  6. Step 6: Final answer
    x = 129,908.97

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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.