Home / 423,821.25-635,661.15-139,514.90

Finding the Fourth Proportional to 423,821.25, 635,661.15 and 139,514.90

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Solution

The fourth proportional to 423,821.25, 635,661.15 and 139,514.90 is: 209,249.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,821.25 : 635,661.15 = 139,514.90 : x
  2. Step 2: Convert to fraction form
    423,821.25/635,661.15 = 139,514.90/x
  3. Step 3: Cross multiply
    423,821.25x = 635,661.15 × 139,514.90
  4. Step 4: Simplify right side
    423,821.25x = 88,684,198,597.83
  5. Step 5: Solve for x
    x = 88,684,198,597.83/423,821.25
  6. Step 6: Final answer
    x = 209,249.06

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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.