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Finding the Fourth Proportional to 551,363.80, 827,045.70 and 218,939.80

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Solution

The fourth proportional to 551,363.80, 827,045.70 and 218,939.80 is: 328,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,363.80 : 827,045.70 = 218,939.80 : x
  2. Step 2: Convert to fraction form
    551,363.80/827,045.70 = 218,939.80/x
  3. Step 3: Cross multiply
    551,363.80x = 827,045.70 × 218,939.80
  4. Step 4: Simplify right side
    551,363.80x = 181,073,220,148.86
  5. Step 5: Solve for x
    x = 181,073,220,148.86/551,363.80
  6. Step 6: Final answer
    x = 328,409.70

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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.