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Finding the Fourth Proportional to 351,658.16, 485,278.16 and 206,461.52

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Solution

The fourth proportional to 351,658.16, 485,278.16 and 206,461.52 is: 284,910.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,658.16 : 485,278.16 = 206,461.52 : x
  2. Step 2: Convert to fraction form
    351,658.16/485,278.16 = 206,461.52/x
  3. Step 3: Cross multiply
    351,658.16x = 485,278.16 × 206,461.52
  4. Step 4: Simplify right side
    351,658.16x = 100,191,266,536.40
  5. Step 5: Solve for x
    x = 100,191,266,536.40/351,658.16
  6. Step 6: Final answer
    x = 284,910.97

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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.