Home / 315,623.92-435,554.26-172,384.54

Finding the Fourth Proportional to 315,623.92, 435,554.26 and 172,384.54

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Solution

The fourth proportional to 315,623.92, 435,554.26 and 172,384.54 is: 237,886.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,623.92 : 435,554.26 = 172,384.54 : x
  2. Step 2: Convert to fraction form
    315,623.92/435,554.26 = 172,384.54/x
  3. Step 3: Cross multiply
    315,623.92x = 435,554.26 × 172,384.54
  4. Step 4: Simplify right side
    315,623.92x = 75,082,820,755.14
  5. Step 5: Solve for x
    x = 75,082,820,755.14/315,623.92
  6. Step 6: Final answer
    x = 237,886.98

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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.