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Finding the Fourth Proportional to 240,639.78, 360,838.17 and 140,829.96

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Solution

The fourth proportional to 240,639.78, 360,838.17 and 140,829.96 is: 211,173.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,639.78 : 360,838.17 = 140,829.96 : x
  2. Step 2: Convert to fraction form
    240,639.78/360,838.17 = 140,829.96/x
  3. Step 3: Cross multiply
    240,639.78x = 360,838.17 × 140,829.96
  4. Step 4: Simplify right side
    240,639.78x = 50,816,825,047.57
  5. Step 5: Solve for x
    x = 50,816,825,047.57/240,639.78
  6. Step 6: Final answer
    x = 211,173.83

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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.