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Finding the Fourth Proportional to 352,648.32, 486,986.82 and 245,511.30

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Solution

The fourth proportional to 352,648.32, 486,986.82 and 245,511.30 is: 339,036.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,648.32 : 486,986.82 = 245,511.30 : x
  2. Step 2: Convert to fraction form
    352,648.32/486,986.82 = 245,511.30/x
  3. Step 3: Cross multiply
    352,648.32x = 486,986.82 × 245,511.30
  4. Step 4: Simplify right side
    352,648.32x = 119,560,767,261.07
  5. Step 5: Solve for x
    x = 119,560,767,261.07/352,648.32
  6. Step 6: Final answer
    x = 339,036.83

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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.