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Finding the Fourth Proportional to 418,223.40, 626,982.37 and 181,387.70

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Solution

The fourth proportional to 418,223.40, 626,982.37 and 181,387.70 is: 271,928.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,223.40 : 626,982.37 = 181,387.70 : x
  2. Step 2: Convert to fraction form
    418,223.40/626,982.37 = 181,387.70/x
  3. Step 3: Cross multiply
    418,223.40x = 626,982.37 × 181,387.70
  4. Step 4: Simplify right side
    418,223.40x = 113,726,888,797.65
  5. Step 5: Solve for x
    x = 113,726,888,797.65/418,223.40
  6. Step 6: Final answer
    x = 271,928.57

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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.