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Finding the Fourth Proportional to 310,503.58, 428,540.31 and 174,548.72

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Solution

The fourth proportional to 310,503.58, 428,540.31 and 174,548.72 is: 240,902.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,503.58 : 428,540.31 = 174,548.72 : x
  2. Step 2: Convert to fraction form
    310,503.58/428,540.31 = 174,548.72/x
  3. Step 3: Cross multiply
    310,503.58x = 428,540.31 × 174,548.72
  4. Step 4: Simplify right side
    310,503.58x = 74,801,162,578.90
  5. Step 5: Solve for x
    x = 74,801,162,578.90/310,503.58
  6. Step 6: Final answer
    x = 240,902.74

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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.