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Finding the Fourth Proportional to 312,557.48, 468,863.84 and 87,919.77

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Solution

The fourth proportional to 312,557.48, 468,863.84 and 87,919.77 is: 131,887.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,557.48 : 468,863.84 = 87,919.77 : x
  2. Step 2: Convert to fraction form
    312,557.48/468,863.84 = 87,919.77/x
  3. Step 3: Cross multiply
    312,557.48x = 468,863.84 × 87,919.77
  4. Step 4: Simplify right side
    312,557.48x = 41,222,400,974.12
  5. Step 5: Solve for x
    x = 41,222,400,974.12/312,557.48
  6. Step 6: Final answer
    x = 131,887.42

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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.