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Finding the Fourth Proportional to 438,076.38, 604,493.86 and 254,272.47

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Solution

The fourth proportional to 438,076.38, 604,493.86 and 254,272.47 is: 350,866.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,076.38 : 604,493.86 = 254,272.47 : x
  2. Step 2: Convert to fraction form
    438,076.38/604,493.86 = 254,272.47/x
  3. Step 3: Cross multiply
    438,076.38x = 604,493.86 × 254,272.47
  4. Step 4: Simplify right side
    438,076.38x = 153,706,145,171.40
  5. Step 5: Solve for x
    x = 153,706,145,171.40/438,076.38
  6. Step 6: Final answer
    x = 350,866.09

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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.