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Finding the Fourth Proportional to 310,689.37, 428,747.22 and 174,723.28

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Solution

The fourth proportional to 310,689.37, 428,747.22 and 174,723.28 is: 241,115.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,689.37 : 428,747.22 = 174,723.28 : x
  2. Step 2: Convert to fraction form
    310,689.37/428,747.22 = 174,723.28/x
  3. Step 3: Cross multiply
    310,689.37x = 428,747.22 × 174,723.28
  4. Step 4: Simplify right side
    310,689.37x = 74,912,120,569.28
  5. Step 5: Solve for x
    x = 74,912,120,569.28/310,689.37
  6. Step 6: Final answer
    x = 241,115.81

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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.