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Finding the Fourth Proportional to 418,272.30, 577,213.80 and 236,983.86

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Solution

The fourth proportional to 418,272.30, 577,213.80 and 236,983.86 is: 327,036.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,272.30 : 577,213.80 = 236,983.86 : x
  2. Step 2: Convert to fraction form
    418,272.30/577,213.80 = 236,983.86/x
  3. Step 3: Cross multiply
    418,272.30x = 577,213.80 × 236,983.86
  4. Step 4: Simplify right side
    418,272.30x = 136,790,354,369.27
  5. Step 5: Solve for x
    x = 136,790,354,369.27/418,272.30
  6. Step 6: Final answer
    x = 327,036.61

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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.