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Finding the Fourth Proportional to 356,348.79, 491,769.25 and 203,383.89

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Solution

The fourth proportional to 356,348.79, 491,769.25 and 203,383.89 is: 280,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,348.79 : 491,769.25 = 203,383.89 : x
  2. Step 2: Convert to fraction form
    356,348.79/491,769.25 = 203,383.89/x
  3. Step 3: Cross multiply
    356,348.79x = 491,769.25 × 203,383.89
  4. Step 4: Simplify right side
    356,348.79x = 100,017,943,047.38
  5. Step 5: Solve for x
    x = 100,017,943,047.38/356,348.79
  6. Step 6: Final answer
    x = 280,674.29

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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.