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Finding the Fourth Proportional to 242,630.40, 363,880.80 and 74,150.40

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Solution

The fourth proportional to 242,630.40, 363,880.80 and 74,150.40 is: 111,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,630.40 : 363,880.80 = 74,150.40 : x
  2. Step 2: Convert to fraction form
    242,630.40/363,880.80 = 74,150.40/x
  3. Step 3: Cross multiply
    242,630.40x = 363,880.80 × 74,150.40
  4. Step 4: Simplify right side
    242,630.40x = 26,981,906,872.32
  5. Step 5: Solve for x
    x = 26,981,906,872.32/242,630.40
  6. Step 6: Final answer
    x = 111,205.80

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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.