Home / 315,623.18-435,553.24-172,383.78

Finding the Fourth Proportional to 315,623.18, 435,553.24 and 172,383.78

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Solution

The fourth proportional to 315,623.18, 435,553.24 and 172,383.78 is: 237,885.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,623.18 : 435,553.24 = 172,383.78 : x
  2. Step 2: Convert to fraction form
    315,623.18/435,553.24 = 172,383.78/x
  3. Step 3: Cross multiply
    315,623.18x = 435,553.24 × 172,383.78
  4. Step 4: Simplify right side
    315,623.18x = 75,082,313,902.45
  5. Step 5: Solve for x
    x = 75,082,313,902.45/315,623.18
  6. Step 6: Final answer
    x = 237,885.93

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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.