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Finding the Fourth Proportional to 240,816.70, 361,115.70 and 91,007.20

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Solution

The fourth proportional to 240,816.70, 361,115.70 and 91,007.20 is: 136,469.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,816.70 : 361,115.70 = 91,007.20 : x
  2. Step 2: Convert to fraction form
    240,816.70/361,115.70 = 91,007.20/x
  3. Step 3: Cross multiply
    240,816.70x = 361,115.70 × 91,007.20
  4. Step 4: Simplify right side
    240,816.70x = 32,864,128,733.04
  5. Step 5: Solve for x
    x = 32,864,128,733.04/240,816.70
  6. Step 6: Final answer
    x = 136,469.48

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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.