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Finding the Fourth Proportional to 418,796.09, 626,608.89 and 248,109.45

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Solution

The fourth proportional to 418,796.09, 626,608.89 and 248,109.45 is: 371,225.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,796.09 : 626,608.89 = 248,109.45 : x
  2. Step 2: Convert to fraction form
    418,796.09/626,608.89 = 248,109.45/x
  3. Step 3: Cross multiply
    418,796.09x = 626,608.89 × 248,109.45
  4. Step 4: Simplify right side
    418,796.09x = 155,467,583,929.97
  5. Step 5: Solve for x
    x = 155,467,583,929.97/418,796.09
  6. Step 6: Final answer
    x = 371,225.02

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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.