Home / 315,631.37-435,571.29-172,391.76

Finding the Fourth Proportional to 315,631.37, 435,571.29 and 172,391.76

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Solution

The fourth proportional to 315,631.37, 435,571.29 and 172,391.76 is: 237,900.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,631.37 : 435,571.29 = 172,391.76 : x
  2. Step 2: Convert to fraction form
    315,631.37/435,571.29 = 172,391.76/x
  3. Step 3: Cross multiply
    315,631.37x = 435,571.29 × 172,391.76
  4. Step 4: Simplify right side
    315,631.37x = 75,088,899,814.64
  5. Step 5: Solve for x
    x = 75,088,899,814.64/315,631.37
  6. Step 6: Final answer
    x = 237,900.62

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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.