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Finding the Fourth Proportional to 220,355.40, 330,497.46 and 87,197.88

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Solution

The fourth proportional to 220,355.40, 330,497.46 and 87,197.88 is: 130,782.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,355.40 : 330,497.46 = 87,197.88 : x
  2. Step 2: Convert to fraction form
    220,355.40/330,497.46 = 87,197.88/x
  3. Step 3: Cross multiply
    220,355.40x = 330,497.46 × 87,197.88
  4. Step 4: Simplify right side
    220,355.40x = 28,818,677,857.38
  5. Step 5: Solve for x
    x = 28,818,677,857.38/220,355.40
  6. Step 6: Final answer
    x = 130,782.72

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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.