Home / 312,975.52-431,903.20-169,738.72

Finding the Fourth Proportional to 312,975.52, 431,903.20 and 169,738.72

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Solution

The fourth proportional to 312,975.52, 431,903.20 and 169,738.72 is: 234,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,975.52 : 431,903.20 = 169,738.72 : x
  2. Step 2: Convert to fraction form
    312,975.52/431,903.20 = 169,738.72/x
  3. Step 3: Cross multiply
    312,975.52x = 431,903.20 × 169,738.72
  4. Step 4: Simplify right side
    312,975.52x = 73,310,696,331.90
  5. Step 5: Solve for x
    x = 73,310,696,331.90/312,975.52
  6. Step 6: Final answer
    x = 234,237.80

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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.