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Finding the Fourth Proportional to 247,040.30, 340,918.30 and 145,066.96

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Solution

The fourth proportional to 247,040.30, 340,918.30 and 145,066.96 is: 200,193.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,040.30 : 340,918.30 = 145,066.96 : x
  2. Step 2: Convert to fraction form
    247,040.30/340,918.30 = 145,066.96/x
  3. Step 3: Cross multiply
    247,040.30x = 340,918.30 × 145,066.96
  4. Step 4: Simplify right side
    247,040.30x = 49,455,981,389.37
  5. Step 5: Solve for x
    x = 49,455,981,389.37/247,040.30
  6. Step 6: Final answer
    x = 200,193.98

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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.