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Finding the Fourth Proportional to 551,014.50, 826,521.78 and 218,590.50

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Solution

The fourth proportional to 551,014.50, 826,521.78 and 218,590.50 is: 327,885.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,014.50 : 826,521.78 = 218,590.50 : x
  2. Step 2: Convert to fraction form
    551,014.50/826,521.78 = 218,590.50/x
  3. Step 3: Cross multiply
    551,014.50x = 826,521.78 × 218,590.50
  4. Step 4: Simplify right side
    551,014.50x = 180,669,809,151.09
  5. Step 5: Solve for x
    x = 180,669,809,151.09/551,014.50
  6. Step 6: Final answer
    x = 327,885.76

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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.