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Finding the Fourth Proportional to 507,219.50, 699,957.90 and 274,645.34

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Solution

The fourth proportional to 507,219.50, 699,957.90 and 274,645.34 is: 379,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,219.50 : 699,957.90 = 274,645.34 : x
  2. Step 2: Convert to fraction form
    507,219.50/699,957.90 = 274,645.34/x
  3. Step 3: Cross multiply
    507,219.50x = 699,957.90 × 274,645.34
  4. Step 4: Simplify right side
    507,219.50x = 192,240,175,431.19
  5. Step 5: Solve for x
    x = 192,240,175,431.19/507,219.50
  6. Step 6: Final answer
    x = 379,007.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.