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Finding the Fourth Proportional to 436,787.96, 655,185.60 and 121,269.47

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Solution

The fourth proportional to 436,787.96, 655,185.60 and 121,269.47 is: 181,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,787.96 : 655,185.60 = 121,269.47 : x
  2. Step 2: Convert to fraction form
    436,787.96/655,185.60 = 121,269.47/x
  3. Step 3: Cross multiply
    436,787.96x = 655,185.60 × 121,269.47
  4. Step 4: Simplify right side
    436,787.96x = 79,454,007,187.70
  5. Step 5: Solve for x
    x = 79,454,007,187.70/436,787.96
  6. Step 6: Final answer
    x = 181,905.22

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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.