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Finding the Fourth Proportional to 438,842.90, 605,599.74 and 237,638.90

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Solution

The fourth proportional to 438,842.90, 605,599.74 and 237,638.90 is: 327,939.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,842.90 : 605,599.74 = 237,638.90 : x
  2. Step 2: Convert to fraction form
    438,842.90/605,599.74 = 237,638.90/x
  3. Step 3: Cross multiply
    438,842.90x = 605,599.74 × 237,638.90
  4. Step 4: Simplify right side
    438,842.90x = 143,914,056,053.89
  5. Step 5: Solve for x
    x = 143,914,056,053.89/438,842.90
  6. Step 6: Final answer
    x = 327,939.81

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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.