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Finding the Fourth Proportional to 453,717.86, 680,524.95 and 121,319.78

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Solution

The fourth proportional to 453,717.86, 680,524.95 and 121,319.78 is: 181,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,717.86 : 680,524.95 = 121,319.78 : x
  2. Step 2: Convert to fraction form
    453,717.86/680,524.95 = 121,319.78/x
  3. Step 3: Cross multiply
    453,717.86x = 680,524.95 × 121,319.78
  4. Step 4: Simplify right side
    453,717.86x = 82,561,134,910.60
  5. Step 5: Solve for x
    x = 82,561,134,910.60/453,717.86
  6. Step 6: Final answer
    x = 181,965.80

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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.