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Finding the Fourth Proportional to 385,813.92, 579,093.60 and 186,274.46

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Solution

The fourth proportional to 385,813.92, 579,093.60 and 186,274.46 is: 279,591.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,813.92 : 579,093.60 = 186,274.46 : x
  2. Step 2: Convert to fraction form
    385,813.92/579,093.60 = 186,274.46/x
  3. Step 3: Cross multiply
    385,813.92x = 579,093.60 × 186,274.46
  4. Step 4: Simplify right side
    385,813.92x = 107,870,347,629.46
  5. Step 5: Solve for x
    x = 107,870,347,629.46/385,813.92
  6. Step 6: Final answer
    x = 279,591.64

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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.