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Finding the Fourth Proportional to 545,129.80, 817,694.70 and 308,933.80

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Solution

The fourth proportional to 545,129.80, 817,694.70 and 308,933.80 is: 463,400.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,129.80 : 817,694.70 = 308,933.80 : x
  2. Step 2: Convert to fraction form
    545,129.80/817,694.70 = 308,933.80/x
  3. Step 3: Cross multiply
    545,129.80x = 817,694.70 × 308,933.80
  4. Step 4: Simplify right side
    545,129.80x = 252,613,530,910.86
  5. Step 5: Solve for x
    x = 252,613,530,910.86/545,129.80
  6. Step 6: Final answer
    x = 463,400.70

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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.