Home / 420,265.26-579,963.24-238,977.18

Finding the Fourth Proportional to 420,265.26, 579,963.24 and 238,977.18

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Solution

The fourth proportional to 420,265.26, 579,963.24 and 238,977.18 is: 329,786.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,265.26 : 579,963.24 = 238,977.18 : x
  2. Step 2: Convert to fraction form
    420,265.26/579,963.24 = 238,977.18/x
  3. Step 3: Cross multiply
    420,265.26x = 579,963.24 × 238,977.18
  4. Step 4: Simplify right side
    420,265.26x = 138,597,979,598.86
  5. Step 5: Solve for x
    x = 138,597,979,598.86/420,265.26
  6. Step 6: Final answer
    x = 329,786.91

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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.