Home / 331,717.17-457,305.90-280,524.06

Finding the Fourth Proportional to 331,717.17, 457,305.90 and 280,524.06

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Solution

The fourth proportional to 331,717.17, 457,305.90 and 280,524.06 is: 386,730.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,717.17 : 457,305.90 = 280,524.06 : x
  2. Step 2: Convert to fraction form
    331,717.17/457,305.90 = 280,524.06/x
  3. Step 3: Cross multiply
    331,717.17x = 457,305.90 × 280,524.06
  4. Step 4: Simplify right side
    331,717.17x = 128,285,307,729.95
  5. Step 5: Solve for x
    x = 128,285,307,729.95/331,717.17
  6. Step 6: Final answer
    x = 386,730.98

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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.