Home / 429,286.08-643,721.76-179,901.12

Finding the Fourth Proportional to 429,286.08, 643,721.76 and 179,901.12

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Solution

The fourth proportional to 429,286.08, 643,721.76 and 179,901.12 is: 269,764.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,286.08 : 643,721.76 = 179,901.12 : x
  2. Step 2: Convert to fraction form
    429,286.08/643,721.76 = 179,901.12/x
  3. Step 3: Cross multiply
    429,286.08x = 643,721.76 × 179,901.12
  4. Step 4: Simplify right side
    429,286.08x = 115,806,265,592.37
  5. Step 5: Solve for x
    x = 115,806,265,592.37/429,286.08
  6. Step 6: Final answer
    x = 269,764.78

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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.