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Finding the Fourth Proportional to 198,663.58, 298,182.65 and 72,425.84

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Solution

The fourth proportional to 198,663.58, 298,182.65 and 72,425.84 is: 108,707.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,663.58 : 298,182.65 = 72,425.84 : x
  2. Step 2: Convert to fraction form
    198,663.58/298,182.65 = 72,425.84/x
  3. Step 3: Cross multiply
    198,663.58x = 298,182.65 × 72,425.84
  4. Step 4: Simplify right side
    198,663.58x = 21,596,127,408.76
  5. Step 5: Solve for x
    x = 21,596,127,408.76/198,663.58
  6. Step 6: Final answer
    x = 108,707.03

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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.