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Finding the Fourth Proportional to 208,793.48, 288,131.90 and 122,762.12

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Solution

The fourth proportional to 208,793.48, 288,131.90 and 122,762.12 is: 169,409.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,793.48 : 288,131.90 = 122,762.12 : x
  2. Step 2: Convert to fraction form
    208,793.48/288,131.90 = 122,762.12/x
  3. Step 3: Cross multiply
    208,793.48x = 288,131.90 × 122,762.12
  4. Step 4: Simplify right side
    208,793.48x = 35,371,680,829.16
  5. Step 5: Solve for x
    x = 35,371,680,829.16/208,793.48
  6. Step 6: Final answer
    x = 169,409.90

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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.