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Finding the Fourth Proportional to 457,590.35, 631,261.09 and 287,918.03

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Solution

The fourth proportional to 457,590.35, 631,261.09 and 287,918.03 is: 397,192.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,590.35 : 631,261.09 = 287,918.03 : x
  2. Step 2: Convert to fraction form
    457,590.35/631,261.09 = 287,918.03/x
  3. Step 3: Cross multiply
    457,590.35x = 631,261.09 × 287,918.03
  4. Step 4: Simplify right side
    457,590.35x = 181,751,449,448.45
  5. Step 5: Solve for x
    x = 181,751,449,448.45/457,590.35
  6. Step 6: Final answer
    x = 397,192.49

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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.