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Finding the Fourth Proportional to 276,718.29, 415,077.54 and 213,630.54

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Solution

The fourth proportional to 276,718.29, 415,077.54 and 213,630.54 is: 320,445.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,718.29 : 415,077.54 = 213,630.54 : x
  2. Step 2: Convert to fraction form
    276,718.29/415,077.54 = 213,630.54/x
  3. Step 3: Cross multiply
    276,718.29x = 415,077.54 × 213,630.54
  4. Step 4: Simplify right side
    276,718.29x = 88,673,239,012.07
  5. Step 5: Solve for x
    x = 88,673,239,012.07/276,718.29
  6. Step 6: Final answer
    x = 320,445.89

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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.