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Finding the Fourth Proportional to 551,364.80, 827,047.20 and 218,940.80

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Solution

The fourth proportional to 551,364.80, 827,047.20 and 218,940.80 is: 328,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,364.80 : 827,047.20 = 218,940.80 : x
  2. Step 2: Convert to fraction form
    551,364.80/827,047.20 = 218,940.80/x
  3. Step 3: Cross multiply
    551,364.80x = 827,047.20 × 218,940.80
  4. Step 4: Simplify right side
    551,364.80x = 181,074,375,605.76
  5. Step 5: Solve for x
    x = 181,074,375,605.76/551,364.80
  6. Step 6: Final answer
    x = 328,411.20

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Similar ratio
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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.