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Finding the Fourth Proportional to 427,907.81, 590,531.23 and 236,921.20

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Solution

The fourth proportional to 427,907.81, 590,531.23 and 236,921.20 is: 326,961.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,907.81 : 590,531.23 = 236,921.20 : x
  2. Step 2: Convert to fraction form
    427,907.81/590,531.23 = 236,921.20/x
  3. Step 3: Cross multiply
    427,907.81x = 590,531.23 × 236,921.20
  4. Step 4: Simplify right side
    427,907.81x = 139,909,370,456.98
  5. Step 5: Solve for x
    x = 139,909,370,456.98/427,907.81
  6. Step 6: Final answer
    x = 326,961.48

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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.