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Finding the Fourth Proportional to 300,140.92, 450,212.16 and 122,647.92

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Solution

The fourth proportional to 300,140.92, 450,212.16 and 122,647.92 is: 183,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,140.92 : 450,212.16 = 122,647.92 : x
  2. Step 2: Convert to fraction form
    300,140.92/450,212.16 = 122,647.92/x
  3. Step 3: Cross multiply
    300,140.92x = 450,212.16 × 122,647.92
  4. Step 4: Simplify right side
    300,140.92x = 55,217,584,982.71
  5. Step 5: Solve for x
    x = 55,217,584,982.71/300,140.92
  6. Step 6: Final answer
    x = 183,972.20

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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.