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Finding the Fourth Proportional to 297,140.81, 445,549.92 and 134,945.78

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Solution

The fourth proportional to 297,140.81, 445,549.92 and 134,945.78 is: 202,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,140.81 : 445,549.92 = 134,945.78 : x
  2. Step 2: Convert to fraction form
    297,140.81/445,549.92 = 134,945.78/x
  3. Step 3: Cross multiply
    297,140.81x = 445,549.92 × 134,945.78
  4. Step 4: Simplify right side
    297,140.81x = 60,125,079,255.59
  5. Step 5: Solve for x
    x = 60,125,079,255.59/297,140.81
  6. Step 6: Final answer
    x = 202,345.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.