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Finding the Fourth Proportional to 279,637.92, 419,106.60 and 220,239

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Solution

The fourth proportional to 279,637.92, 419,106.60 and 220,239 is: 330,082.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,637.92 : 419,106.60 = 220,239 : x
  2. Step 2: Convert to fraction form
    279,637.92/419,106.60 = 220,239/x
  3. Step 3: Cross multiply
    279,637.92x = 419,106.60 × 220,239
  4. Step 4: Simplify right side
    279,637.92x = 92,303,618,477.40
  5. Step 5: Solve for x
    x = 92,303,618,477.40/279,637.92
  6. Step 6: Final answer
    x = 330,082.62

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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.