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Finding the Fourth Proportional to 484,400.98, 726,638.73 and 147,470.55

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Solution

The fourth proportional to 484,400.98, 726,638.73 and 147,470.55 is: 221,217.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,400.98 : 726,638.73 = 147,470.55 : x
  2. Step 2: Convert to fraction form
    484,400.98/726,638.73 = 147,470.55/x
  3. Step 3: Cross multiply
    484,400.98x = 726,638.73 × 147,470.55
  4. Step 4: Simplify right side
    484,400.98x = 107,157,813,164.40
  5. Step 5: Solve for x
    x = 107,157,813,164.40/484,400.98
  6. Step 6: Final answer
    x = 221,217.17

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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.