Home / 419,977.09-579,553.95-238,685.86

Finding the Fourth Proportional to 419,977.09, 579,553.95 and 238,685.86

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Solution

The fourth proportional to 419,977.09, 579,553.95 and 238,685.86 is: 329,378.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,977.09 : 579,553.95 = 238,685.86 : x
  2. Step 2: Convert to fraction form
    419,977.09/579,553.95 = 238,685.86/x
  3. Step 3: Cross multiply
    419,977.09x = 579,553.95 × 238,685.86
  4. Step 4: Simplify right side
    419,977.09x = 138,331,332,972.15
  5. Step 5: Solve for x
    x = 138,331,332,972.15/419,977.09
  6. Step 6: Final answer
    x = 329,378.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.