Home / 315,514.26-473,272.74-78,857.28

Finding the Fourth Proportional to 315,514.26, 473,272.74 and 78,857.28

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Solution

The fourth proportional to 315,514.26, 473,272.74 and 78,857.28 is: 118,286.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,514.26 : 473,272.74 = 78,857.28 : x
  2. Step 2: Convert to fraction form
    315,514.26/473,272.74 = 78,857.28/x
  3. Step 3: Cross multiply
    315,514.26x = 473,272.74 × 78,857.28
  4. Step 4: Simplify right side
    315,514.26x = 37,321,000,974.55
  5. Step 5: Solve for x
    x = 37,321,000,974.55/315,514.26
  6. Step 6: Final answer
    x = 118,286.26

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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.