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Finding the Fourth Proportional to 242,728.80, 363,963.60 and 102,328.80

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Solution

The fourth proportional to 242,728.80, 363,963.60 and 102,328.80 is: 153,438.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,728.80 : 363,963.60 = 102,328.80 : x
  2. Step 2: Convert to fraction form
    242,728.80/363,963.60 = 102,328.80/x
  3. Step 3: Cross multiply
    242,728.80x = 363,963.60 × 102,328.80
  4. Step 4: Simplify right side
    242,728.80x = 37,243,958,431.68
  5. Step 5: Solve for x
    x = 37,243,958,431.68/242,728.80
  6. Step 6: Final answer
    x = 153,438.56

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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.