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Finding the Fourth Proportional to 322,149.16, 483,186.21 and 85,510.23

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Solution

The fourth proportional to 322,149.16, 483,186.21 and 85,510.23 is: 128,255.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,149.16 : 483,186.21 = 85,510.23 : x
  2. Step 2: Convert to fraction form
    322,149.16/483,186.21 = 85,510.23/x
  3. Step 3: Cross multiply
    322,149.16x = 483,186.21 × 85,510.23
  4. Step 4: Simplify right side
    322,149.16x = 41,317,363,949.93
  5. Step 5: Solve for x
    x = 41,317,363,949.93/322,149.16
  6. Step 6: Final answer
    x = 128,255.38

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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.