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Finding the Fourth Proportional to 484,415.34, 726,378.79 and 147,391.35

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Solution

The fourth proportional to 484,415.34, 726,378.79 and 147,391.35 is: 221,012.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,415.34 : 726,378.79 = 147,391.35 : x
  2. Step 2: Convert to fraction form
    484,415.34/726,378.79 = 147,391.35/x
  3. Step 3: Cross multiply
    484,415.34x = 726,378.79 × 147,391.35
  4. Step 4: Simplify right side
    484,415.34x = 107,061,947,653.43
  5. Step 5: Solve for x
    x = 107,061,947,653.43/484,415.34
  6. Step 6: Final answer
    x = 221,012.71

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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.