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Finding the Fourth Proportional to 218,780.80, 328,171.20 and 184,955.20

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Solution

The fourth proportional to 218,780.80, 328,171.20 and 184,955.20 is: 277,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,780.80 : 328,171.20 = 184,955.20 : x
  2. Step 2: Convert to fraction form
    218,780.80/328,171.20 = 184,955.20/x
  3. Step 3: Cross multiply
    218,780.80x = 328,171.20 × 184,955.20
  4. Step 4: Simplify right side
    218,780.80x = 60,696,969,930.24
  5. Step 5: Solve for x
    x = 60,696,969,930.24/218,780.80
  6. Step 6: Final answer
    x = 277,432.80

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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.