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Finding the Fourth Proportional to 252,620.31, 348,615.98 and 139,443.03

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Solution

The fourth proportional to 252,620.31, 348,615.98 and 139,443.03 is: 192,431.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,620.31 : 348,615.98 = 139,443.03 : x
  2. Step 2: Convert to fraction form
    252,620.31/348,615.98 = 139,443.03/x
  3. Step 3: Cross multiply
    252,620.31x = 348,615.98 × 139,443.03
  4. Step 4: Simplify right side
    252,620.31x = 48,612,067,860.40
  5. Step 5: Solve for x
    x = 48,612,067,860.40/252,620.31
  6. Step 6: Final answer
    x = 192,431.35

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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.