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Finding the Fourth Proportional to 312,882.58, 431,837.49 and 185,628.34

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Solution

The fourth proportional to 312,882.58, 431,837.49 and 185,628.34 is: 256,202.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,882.58 : 431,837.49 = 185,628.34 : x
  2. Step 2: Convert to fraction form
    312,882.58/431,837.49 = 185,628.34/x
  3. Step 3: Cross multiply
    312,882.58x = 431,837.49 × 185,628.34
  4. Step 4: Simplify right side
    312,882.58x = 80,161,276,418.47
  5. Step 5: Solve for x
    x = 80,161,276,418.47/312,882.58
  6. Step 6: Final answer
    x = 256,202.43

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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.