Home / 253,705.38-380,601.30-87,454.50

Finding the Fourth Proportional to 253,705.38, 380,601.30 and 87,454.50

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Solution

The fourth proportional to 253,705.38, 380,601.30 and 87,454.50 is: 131,196.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,705.38 : 380,601.30 = 87,454.50 : x
  2. Step 2: Convert to fraction form
    253,705.38/380,601.30 = 87,454.50/x
  3. Step 3: Cross multiply
    253,705.38x = 380,601.30 × 87,454.50
  4. Step 4: Simplify right side
    253,705.38x = 33,285,296,390.85
  5. Step 5: Solve for x
    x = 33,285,296,390.85/253,705.38
  6. Step 6: Final answer
    x = 131,196.65

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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.