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Finding the Fourth Proportional to 276,676.43, 415,387.78 and 177,031.13

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Solution

The fourth proportional to 276,676.43, 415,387.78 and 177,031.13 is: 265,785.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,676.43 : 415,387.78 = 177,031.13 : x
  2. Step 2: Convert to fraction form
    276,676.43/415,387.78 = 177,031.13/x
  3. Step 3: Cross multiply
    276,676.43x = 415,387.78 × 177,031.13
  4. Step 4: Simplify right side
    276,676.43x = 73,536,565,562.07
  5. Step 5: Solve for x
    x = 73,536,565,562.07/276,676.43
  6. Step 6: Final answer
    x = 265,785.44

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1.5x scale

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.