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Finding the Fourth Proportional to 202,439.84, 303,628.54 and 69,289.52

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Solution

The fourth proportional to 202,439.84, 303,628.54 and 69,289.52 is: 103,923.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,439.84 : 303,628.54 = 69,289.52 : x
  2. Step 2: Convert to fraction form
    202,439.84/303,628.54 = 69,289.52/x
  3. Step 3: Cross multiply
    202,439.84x = 303,628.54 × 69,289.52
  4. Step 4: Simplify right side
    202,439.84x = 21,038,275,794.90
  5. Step 5: Solve for x
    x = 21,038,275,794.90/202,439.84
  6. Step 6: Final answer
    x = 103,923.59

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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.