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Finding the Fourth Proportional to 218,646.72, 301,736.88 and 132,605.28

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Solution

The fourth proportional to 218,646.72, 301,736.88 and 132,605.28 is: 182,997.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,646.72 : 301,736.88 = 132,605.28 : x
  2. Step 2: Convert to fraction form
    218,646.72/301,736.88 = 132,605.28/x
  3. Step 3: Cross multiply
    218,646.72x = 301,736.88 × 132,605.28
  4. Step 4: Simplify right side
    218,646.72x = 40,011,903,458.73
  5. Step 5: Solve for x
    x = 40,011,903,458.73/218,646.72
  6. Step 6: Final answer
    x = 182,997.96

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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.