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Finding the Fourth Proportional to 312,285.76, 468,282.80 and 112,579.84

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Solution

The fourth proportional to 312,285.76, 468,282.80 and 112,579.84 is: 168,817.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,285.76 : 468,282.80 = 112,579.84 : x
  2. Step 2: Convert to fraction form
    312,285.76/468,282.80 = 112,579.84/x
  3. Step 3: Cross multiply
    312,285.76x = 468,282.80 × 112,579.84
  4. Step 4: Simplify right side
    312,285.76x = 52,719,202,698.75
  5. Step 5: Solve for x
    x = 52,719,202,698.75/312,285.76
  6. Step 6: Final answer
    x = 168,817.18

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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.