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Finding the Fourth Proportional to 218,951.02, 328,573.86 and 76,797.58

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Solution

The fourth proportional to 218,951.02, 328,573.86 and 76,797.58 is: 115,248.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,951.02 : 328,573.86 = 76,797.58 : x
  2. Step 2: Convert to fraction form
    218,951.02/328,573.86 = 76,797.58/x
  3. Step 3: Cross multiply
    218,951.02x = 328,573.86 × 76,797.58
  4. Step 4: Simplify right side
    218,951.02x = 25,233,677,299.26
  5. Step 5: Solve for x
    x = 25,233,677,299.26/218,951.02
  6. Step 6: Final answer
    x = 115,248.05

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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.