Home / 208,440.72-312,699.96-68,207.04

Finding the Fourth Proportional to 208,440.72, 312,699.96 and 68,207.04

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Solution

The fourth proportional to 208,440.72, 312,699.96 and 68,207.04 is: 102,323.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,440.72 : 312,699.96 = 68,207.04 : x
  2. Step 2: Convert to fraction form
    208,440.72/312,699.96 = 68,207.04/x
  3. Step 3: Cross multiply
    208,440.72x = 312,699.96 × 68,207.04
  4. Step 4: Simplify right side
    208,440.72x = 21,328,338,679.72
  5. Step 5: Solve for x
    x = 21,328,338,679.72/208,440.72
  6. Step 6: Final answer
    x = 102,323.28

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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.