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Finding the Fourth Proportional to 322,470.08, 483,716.04 and 85,812.98

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Solution

The fourth proportional to 322,470.08, 483,716.04 and 85,812.98 is: 128,722.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,470.08 : 483,716.04 = 85,812.98 : x
  2. Step 2: Convert to fraction form
    322,470.08/483,716.04 = 85,812.98/x
  3. Step 3: Cross multiply
    322,470.08x = 483,716.04 × 85,812.98
  4. Step 4: Simplify right side
    322,470.08x = 41,509,114,866.20
  5. Step 5: Solve for x
    x = 41,509,114,866.20/322,470.08
  6. Step 6: Final answer
    x = 128,722.38

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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.