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Finding the Fourth Proportional to 322,568.06, 483,903.12 and 85,929.80

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Solution

The fourth proportional to 322,568.06, 483,903.12 and 85,929.80 is: 128,908.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,568.06 : 483,903.12 = 85,929.80 : x
  2. Step 2: Convert to fraction form
    322,568.06/483,903.12 = 85,929.80/x
  3. Step 3: Cross multiply
    322,568.06x = 483,903.12 × 85,929.80
  4. Step 4: Simplify right side
    322,568.06x = 41,581,698,320.98
  5. Step 5: Solve for x
    x = 41,581,698,320.98/322,568.06
  6. Step 6: Final answer
    x = 128,908.29

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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.