Home / 372,728.44-513,784.38-312,192.28

Finding the Fourth Proportional to 372,728.44, 513,784.38 and 312,192.28

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Solution

The fourth proportional to 372,728.44, 513,784.38 and 312,192.28 is: 430,338.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,728.44 : 513,784.38 = 312,192.28 : x
  2. Step 2: Convert to fraction form
    372,728.44/513,784.38 = 312,192.28/x
  3. Step 3: Cross multiply
    372,728.44x = 513,784.38 × 312,192.28
  4. Step 4: Simplify right side
    372,728.44x = 160,399,517,020.59
  5. Step 5: Solve for x
    x = 160,399,517,020.59/372,728.44
  6. Step 6: Final answer
    x = 430,338.82

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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.