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Finding the Fourth Proportional to 431,063.56, 646,595.07 and 203,306.21

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Solution

The fourth proportional to 431,063.56, 646,595.07 and 203,306.21 is: 304,959.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,063.56 : 646,595.07 = 203,306.21 : x
  2. Step 2: Convert to fraction form
    431,063.56/646,595.07 = 203,306.21/x
  3. Step 3: Cross multiply
    431,063.56x = 646,595.07 × 203,306.21
  4. Step 4: Simplify right side
    431,063.56x = 131,456,793,086.39
  5. Step 5: Solve for x
    x = 131,456,793,086.39/431,063.56
  6. Step 6: Final answer
    x = 304,959.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.