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Finding the Fourth Proportional to 438,937.96, 605,714.43 and 275,678.80

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Solution

The fourth proportional to 438,937.96, 605,714.43 and 275,678.80 is: 380,424.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,937.96 : 605,714.43 = 275,678.80 : x
  2. Step 2: Convert to fraction form
    438,937.96/605,714.43 = 275,678.80/x
  3. Step 3: Cross multiply
    438,937.96x = 605,714.43 × 275,678.80
  4. Step 4: Simplify right side
    438,937.96x = 166,982,627,205.08
  5. Step 5: Solve for x
    x = 166,982,627,205.08/438,937.96
  6. Step 6: Final answer
    x = 380,424.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.