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Finding the Fourth Proportional to 218,113.96, 301,007.94 and 122,650.60

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Solution

The fourth proportional to 218,113.96, 301,007.94 and 122,650.60 is: 169,263.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,113.96 : 301,007.94 = 122,650.60 : x
  2. Step 2: Convert to fraction form
    218,113.96/301,007.94 = 122,650.60/x
  3. Step 3: Cross multiply
    218,113.96x = 301,007.94 × 122,650.60
  4. Step 4: Simplify right side
    218,113.96x = 36,918,804,445.76
  5. Step 5: Solve for x
    x = 36,918,804,445.76/218,113.96
  6. Step 6: Final answer
    x = 169,263.83

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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.