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Finding the Fourth Proportional to 400,803.72, 601,215.30 and 134,572.92

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Solution

The fourth proportional to 400,803.72, 601,215.30 and 134,572.92 is: 201,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,803.72 : 601,215.30 = 134,572.92 : x
  2. Step 2: Convert to fraction form
    400,803.72/601,215.30 = 134,572.92/x
  3. Step 3: Cross multiply
    400,803.72x = 601,215.30 × 134,572.92
  4. Step 4: Simplify right side
    400,803.72x = 80,907,298,469.68
  5. Step 5: Solve for x
    x = 80,907,298,469.68/400,803.72
  6. Step 6: Final answer
    x = 201,862.64

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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.