Home / 208,456.12-312,680.88-66,299.34

Finding the Fourth Proportional to 208,456.12, 312,680.88 and 66,299.34

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Solution

The fourth proportional to 208,456.12, 312,680.88 and 66,299.34 is: 99,447.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,456.12 : 312,680.88 = 66,299.34 : x
  2. Step 2: Convert to fraction form
    208,456.12/312,680.88 = 66,299.34/x
  3. Step 3: Cross multiply
    208,456.12x = 312,680.88 × 66,299.34
  4. Step 4: Simplify right side
    208,456.12x = 20,730,537,147.17
  5. Step 5: Solve for x
    x = 20,730,537,147.17/208,456.12
  6. Step 6: Final answer
    x = 99,447.97

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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.