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Finding the Fourth Proportional to 224,749.11, 310,163.18 and 129,255.87

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Solution

The fourth proportional to 224,749.11, 310,163.18 and 129,255.87 is: 178,378.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,749.11 : 310,163.18 = 129,255.87 : x
  2. Step 2: Convert to fraction form
    224,749.11/310,163.18 = 129,255.87/x
  3. Step 3: Cross multiply
    224,749.11x = 310,163.18 × 129,255.87
  4. Step 4: Simplify right side
    224,749.11x = 40,090,411,672.87
  5. Step 5: Solve for x
    x = 40,090,411,672.87/224,749.11
  6. Step 6: Final answer
    x = 178,378.51

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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.