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Finding the Fourth Proportional to 276,940.67, 415,374.01 and 77,244.35

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Solution

The fourth proportional to 276,940.67, 415,374.01 and 77,244.35 is: 115,856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,940.67 : 415,374.01 = 77,244.35 : x
  2. Step 2: Convert to fraction form
    276,940.67/415,374.01 = 77,244.35/x
  3. Step 3: Cross multiply
    276,940.67x = 415,374.01 × 77,244.35
  4. Step 4: Simplify right side
    276,940.67x = 32,085,295,409.34
  5. Step 5: Solve for x
    x = 32,085,295,409.34/276,940.67
  6. Step 6: Final answer
    x = 115,856.21

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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.