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Finding the Fourth Proportional to 322,431.97, 483,647.37 and 85,774.65

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Solution

The fourth proportional to 322,431.97, 483,647.37 and 85,774.65 is: 128,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,431.97 : 483,647.37 = 85,774.65 : x
  2. Step 2: Convert to fraction form
    322,431.97/483,647.37 = 85,774.65/x
  3. Step 3: Cross multiply
    322,431.97x = 483,647.37 × 85,774.65
  4. Step 4: Simplify right side
    322,431.97x = 41,484,683,563.52
  5. Step 5: Solve for x
    x = 41,484,683,563.52/322,431.97
  6. Step 6: Final answer
    x = 128,661.82

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1.5x scale

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.