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Finding the Fourth Proportional to 252,443.81, 348,354.53 and 142,078.56

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Solution

The fourth proportional to 252,443.81, 348,354.53 and 142,078.56 is: 196,058.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,443.81 : 348,354.53 = 142,078.56 : x
  2. Step 2: Convert to fraction form
    252,443.81/348,354.53 = 142,078.56/x
  3. Step 3: Cross multiply
    252,443.81x = 348,354.53 × 142,078.56
  4. Step 4: Simplify right side
    252,443.81x = 49,493,709,281.48
  5. Step 5: Solve for x
    x = 49,493,709,281.48/252,443.81
  6. Step 6: Final answer
    x = 196,058.32

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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.