Home / 204,828.64-307,031.82-78,434.38

Finding the Fourth Proportional to 204,828.64, 307,031.82 and 78,434.38

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Solution

The fourth proportional to 204,828.64, 307,031.82 and 78,434.38 is: 117,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,828.64 : 307,031.82 = 78,434.38 : x
  2. Step 2: Convert to fraction form
    204,828.64/307,031.82 = 78,434.38/x
  3. Step 3: Cross multiply
    204,828.64x = 307,031.82 × 78,434.38
  4. Step 4: Simplify right side
    204,828.64x = 24,081,850,441.97
  5. Step 5: Solve for x
    x = 24,081,850,441.97/204,828.64
  6. Step 6: Final answer
    x = 117,570.72

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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.