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Finding the Fourth Proportional to 242,883.96, 363,639.06 and 128,771.82

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Solution

The fourth proportional to 242,883.96, 363,639.06 and 128,771.82 is: 192,793.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,883.96 : 363,639.06 = 128,771.82 : x
  2. Step 2: Convert to fraction form
    242,883.96/363,639.06 = 128,771.82/x
  3. Step 3: Cross multiply
    242,883.96x = 363,639.06 × 128,771.82
  4. Step 4: Simplify right side
    242,883.96x = 46,826,463,579.29
  5. Step 5: Solve for x
    x = 46,826,463,579.29/242,883.96
  6. Step 6: Final answer
    x = 192,793.56

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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.