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Finding the Fourth Proportional to 551,359.80, 827,039.70 and 218,935.80

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Solution

The fourth proportional to 551,359.80, 827,039.70 and 218,935.80 is: 328,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,359.80 : 827,039.70 = 218,935.80 : x
  2. Step 2: Convert to fraction form
    551,359.80/827,039.70 = 218,935.80/x
  3. Step 3: Cross multiply
    551,359.80x = 827,039.70 × 218,935.80
  4. Step 4: Simplify right side
    551,359.80x = 181,068,598,351.26
  5. Step 5: Solve for x
    x = 181,068,598,351.26/551,359.80
  6. Step 6: Final answer
    x = 328,403.70

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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.