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Finding the Fourth Proportional to 312,479.87, 468,623.09 and 112,774.97

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Solution

The fourth proportional to 312,479.87, 468,623.09 and 112,774.97 is: 169,127.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,479.87 : 468,623.09 = 112,774.97 : x
  2. Step 2: Convert to fraction form
    312,479.87/468,623.09 = 112,774.97/x
  3. Step 3: Cross multiply
    312,479.87x = 468,623.09 × 112,774.97
  4. Step 4: Simplify right side
    312,479.87x = 52,848,952,009.07
  5. Step 5: Solve for x
    x = 52,848,952,009.07/312,479.87
  6. Step 6: Final answer
    x = 169,127.54

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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.