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Finding the Fourth Proportional to 252,458.48, 348,394.56 and 139,285.28

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Solution

The fourth proportional to 252,458.48, 348,394.56 and 139,285.28 is: 192,214.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,458.48 : 348,394.56 = 139,285.28 : x
  2. Step 2: Convert to fraction form
    252,458.48/348,394.56 = 139,285.28/x
  3. Step 3: Cross multiply
    252,458.48x = 348,394.56 × 139,285.28
  4. Step 4: Simplify right side
    252,458.48x = 48,526,233,840.08
  5. Step 5: Solve for x
    x = 48,526,233,840.08/252,458.48
  6. Step 6: Final answer
    x = 192,214.71

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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.