Home / 219,834.49-329,530.20-86,663.20

Finding the Fourth Proportional to 219,834.49, 329,530.20 and 86,663.20

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Solution

The fourth proportional to 219,834.49, 329,530.20 and 86,663.20 is: 129,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,834.49 : 329,530.20 = 86,663.20 : x
  2. Step 2: Convert to fraction form
    219,834.49/329,530.20 = 86,663.20/x
  3. Step 3: Cross multiply
    219,834.49x = 329,530.20 × 86,663.20
  4. Step 4: Simplify right side
    219,834.49x = 28,558,141,628.64
  5. Step 5: Solve for x
    x = 28,558,141,628.64/219,834.49
  6. Step 6: Final answer
    x = 129,907.47

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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.