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Finding the Fourth Proportional to 312,680.40, 468,329.40 and 242,005.20

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Solution

The fourth proportional to 312,680.40, 468,329.40 and 242,005.20 is: 362,472.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,680.40 : 468,329.40 = 242,005.20 : x
  2. Step 2: Convert to fraction form
    312,680.40/468,329.40 = 242,005.20/x
  3. Step 3: Cross multiply
    312,680.40x = 468,329.40 × 242,005.20
  4. Step 4: Simplify right side
    312,680.40x = 113,338,150,112.88
  5. Step 5: Solve for x
    x = 113,338,150,112.88/312,680.40
  6. Step 6: Final answer
    x = 362,472.83

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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.