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Finding the Fourth Proportional to 252,347.81, 348,230.30 and 139,170.56

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Solution

The fourth proportional to 252,347.81, 348,230.30 and 139,170.56 is: 192,050.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,347.81 : 348,230.30 = 139,170.56 : x
  2. Step 2: Convert to fraction form
    252,347.81/348,230.30 = 139,170.56/x
  3. Step 3: Cross multiply
    252,347.81x = 348,230.30 × 139,170.56
  4. Step 4: Simplify right side
    252,347.81x = 48,463,403,422.96
  5. Step 5: Solve for x
    x = 48,463,403,422.96/252,347.81
  6. Step 6: Final answer
    x = 192,050.03

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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.