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Finding the Fourth Proportional to 345,321.93, 476,545.11 and 200,155.77

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Solution

The fourth proportional to 345,321.93, 476,545.11 and 200,155.77 is: 276,215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,321.93 : 476,545.11 = 200,155.77 : x
  2. Step 2: Convert to fraction form
    345,321.93/476,545.11 = 200,155.77/x
  3. Step 3: Cross multiply
    345,321.93x = 476,545.11 × 200,155.77
  4. Step 4: Simplify right side
    345,321.93x = 95,383,253,431.78
  5. Step 5: Solve for x
    x = 95,383,253,431.78/345,321.93
  6. Step 6: Final answer
    x = 276,215.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.