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Finding the Fourth Proportional to 386,351.03, 579,489.59 and 236,514.20

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Solution

The fourth proportional to 386,351.03, 579,489.59 and 236,514.20 is: 354,748.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,351.03 : 579,489.59 = 236,514.20 : x
  2. Step 2: Convert to fraction form
    386,351.03/579,489.59 = 236,514.20/x
  3. Step 3: Cross multiply
    386,351.03x = 579,489.59 × 236,514.20
  4. Step 4: Simplify right side
    386,351.03x = 137,057,514,481.02
  5. Step 5: Solve for x
    x = 137,057,514,481.02/386,351.03
  6. Step 6: Final answer
    x = 354,748.67

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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.