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Finding the Fourth Proportional to 322,088.37, 483,157.91 and 85,431.07

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Solution

The fourth proportional to 322,088.37, 483,157.91 and 85,431.07 is: 128,153.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,088.37 : 483,157.91 = 85,431.07 : x
  2. Step 2: Convert to fraction form
    322,088.37/483,157.91 = 85,431.07/x
  3. Step 3: Cross multiply
    322,088.37x = 483,157.91 × 85,431.07
  4. Step 4: Simplify right side
    322,088.37x = 41,276,697,230.26
  5. Step 5: Solve for x
    x = 41,276,697,230.26/322,088.37
  6. Step 6: Final answer
    x = 128,153.33

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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.