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Finding the Fourth Proportional to 480,409.96, 663,006.66 and 279,193

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Solution

The fourth proportional to 480,409.96, 663,006.66 and 279,193 is: 385,310.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,409.96 : 663,006.66 = 279,193 : x
  2. Step 2: Convert to fraction form
    480,409.96/663,006.66 = 279,193/x
  3. Step 3: Cross multiply
    480,409.96x = 663,006.66 × 279,193
  4. Step 4: Simplify right side
    480,409.96x = 185,106,818,425.38
  5. Step 5: Solve for x
    x = 185,106,818,425.38/480,409.96
  6. Step 6: Final answer
    x = 385,310.12

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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.