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Finding the Fourth Proportional to 646,391.89, 969,587.84 and 203,159.89

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Solution

The fourth proportional to 646,391.89, 969,587.84 and 203,159.89 is: 304,739.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,391.89 : 969,587.84 = 203,159.89 : x
  2. Step 2: Convert to fraction form
    646,391.89/969,587.84 = 203,159.89/x
  3. Step 3: Cross multiply
    646,391.89x = 969,587.84 × 203,159.89
  4. Step 4: Simplify right side
    646,391.89x = 196,981,357,903.94
  5. Step 5: Solve for x
    x = 196,981,357,903.94/646,391.89
  6. Step 6: Final answer
    x = 304,739.84

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Similar ratio
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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.