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Finding the Fourth Proportional to 218,877.60, 328,316.40 and 191,229.60

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Solution

The fourth proportional to 218,877.60, 328,316.40 and 191,229.60 is: 286,844.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,877.60 : 328,316.40 = 191,229.60 : x
  2. Step 2: Convert to fraction form
    218,877.60/328,316.40 = 191,229.60/x
  3. Step 3: Cross multiply
    218,877.60x = 328,316.40 × 191,229.60
  4. Step 4: Simplify right side
    218,877.60x = 62,783,813,845.44
  5. Step 5: Solve for x
    x = 62,783,813,845.44/218,877.60
  6. Step 6: Final answer
    x = 286,844.40

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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.