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Finding the Fourth Proportional to 315,622.92, 435,552.89 and 172,383.54

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Solution

The fourth proportional to 315,622.92, 435,552.89 and 172,383.54 is: 237,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,622.92 : 435,552.89 = 172,383.54 : x
  2. Step 2: Convert to fraction form
    315,622.92/435,552.89 = 172,383.54/x
  3. Step 3: Cross multiply
    315,622.92x = 435,552.89 × 172,383.54
  4. Step 4: Simplify right side
    315,622.92x = 75,082,145,995.75
  5. Step 5: Solve for x
    x = 75,082,145,995.75/315,622.92
  6. Step 6: Final answer
    x = 237,885.60

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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.