Home / 858,833.70-1,288,294.89-219,143.04

Finding the Fourth Proportional to 858,833.70, 1,288,294.89 and 219,143.04

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Solution

The fourth proportional to 858,833.70, 1,288,294.89 and 219,143.04 is: 328,725.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,833.70 : 1,288,294.89 = 219,143.04 : x
  2. Step 2: Convert to fraction form
    858,833.70/1,288,294.89 = 219,143.04/x
  3. Step 3: Cross multiply
    858,833.70x = 1,288,294.89 × 219,143.04
  4. Step 4: Simplify right side
    858,833.70x = 282,320,858,611.07
  5. Step 5: Solve for x
    x = 282,320,858,611.07/858,833.70
  6. Step 6: Final answer
    x = 328,725.87

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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.