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Finding the Fourth Proportional to 220,499.55, 330,749.33 and 197,689.95

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Solution

The fourth proportional to 220,499.55, 330,749.33 and 197,689.95 is: 296,534.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,499.55 : 330,749.33 = 197,689.95 : x
  2. Step 2: Convert to fraction form
    220,499.55/330,749.33 = 197,689.95/x
  3. Step 3: Cross multiply
    220,499.55x = 330,749.33 × 197,689.95
  4. Step 4: Simplify right side
    220,499.55x = 65,385,817,521.78
  5. Step 5: Solve for x
    x = 65,385,817,521.78/220,499.55
  6. Step 6: Final answer
    x = 296,534.93

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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.