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Finding the Fourth Proportional to 397,392.82, 548,379.93 and 227,637.88

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Solution

The fourth proportional to 397,392.82, 548,379.93 and 227,637.88 is: 314,127.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,392.82 : 548,379.93 = 227,637.88 : x
  2. Step 2: Convert to fraction form
    397,392.82/548,379.93 = 227,637.88/x
  3. Step 3: Cross multiply
    397,392.82x = 548,379.93 × 227,637.88
  4. Step 4: Simplify right side
    397,392.82x = 124,832,044,699.75
  5. Step 5: Solve for x
    x = 124,832,044,699.75/397,392.82
  6. Step 6: Final answer
    x = 314,127.58

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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.