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Finding the Fourth Proportional to 266,005.48, 398,743.26 and 125,514.28

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Solution

The fourth proportional to 266,005.48, 398,743.26 and 125,514.28 is: 188,146.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,005.48 : 398,743.26 = 125,514.28 : x
  2. Step 2: Convert to fraction form
    266,005.48/398,743.26 = 125,514.28/x
  3. Step 3: Cross multiply
    266,005.48x = 398,743.26 × 125,514.28
  4. Step 4: Simplify right side
    266,005.48x = 50,047,973,183.75
  5. Step 5: Solve for x
    x = 50,047,973,183.75/266,005.48
  6. Step 6: Final answer
    x = 188,146.40

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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.