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Finding the Fourth Proportional to 218,246.72, 301,180.68 and 122,753.60

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Solution

The fourth proportional to 218,246.72, 301,180.68 and 122,753.60 is: 169,400.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,246.72 : 301,180.68 = 122,753.60 : x
  2. Step 2: Convert to fraction form
    218,246.72/301,180.68 = 122,753.60/x
  3. Step 3: Cross multiply
    218,246.72x = 301,180.68 × 122,753.60
  4. Step 4: Simplify right side
    218,246.72x = 36,971,012,720.45
  5. Step 5: Solve for x
    x = 36,971,012,720.45/218,246.72
  6. Step 6: Final answer
    x = 169,400.08

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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.