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Finding the Fourth Proportional to 356,279.67, 491,543.88 and 203,207.28

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Solution

The fourth proportional to 356,279.67, 491,543.88 and 203,207.28 is: 280,356.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,279.67 : 491,543.88 = 203,207.28 : x
  2. Step 2: Convert to fraction form
    356,279.67/491,543.88 = 203,207.28/x
  3. Step 3: Cross multiply
    356,279.67x = 491,543.88 × 203,207.28
  4. Step 4: Simplify right side
    356,279.67x = 99,885,294,855.45
  5. Step 5: Solve for x
    x = 99,885,294,855.45/356,279.67
  6. Step 6: Final answer
    x = 280,356.43

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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.