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Finding the Fourth Proportional to 252,783.28, 348,843 and 139,607.92

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Solution

The fourth proportional to 252,783.28, 348,843 and 139,607.92 is: 192,660.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,783.28 : 348,843 = 139,607.92 : x
  2. Step 2: Convert to fraction form
    252,783.28/348,843 = 139,607.92/x
  3. Step 3: Cross multiply
    252,783.28x = 348,843 × 139,607.92
  4. Step 4: Simplify right side
    252,783.28x = 48,701,245,636.56
  5. Step 5: Solve for x
    x = 48,701,245,636.56/252,783.28
  6. Step 6: Final answer
    x = 192,660.07

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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.