Home / 219,789.78-329,598.40-77,604.72

Finding the Fourth Proportional to 219,789.78, 329,598.40 and 77,604.72

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Solution

The fourth proportional to 219,789.78, 329,598.40 and 77,604.72 is: 116,376.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,789.78 : 329,598.40 = 77,604.72 : x
  2. Step 2: Convert to fraction form
    219,789.78/329,598.40 = 77,604.72/x
  3. Step 3: Cross multiply
    219,789.78x = 329,598.40 × 77,604.72
  4. Step 4: Simplify right side
    219,789.78x = 25,578,391,544.45
  5. Step 5: Solve for x
    x = 25,578,391,544.45/219,789.78
  6. Step 6: Final answer
    x = 116,376.62

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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.