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Finding the Fourth Proportional to 235,615.20, 353,422.80 and 210,027.30

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Solution

The fourth proportional to 235,615.20, 353,422.80 and 210,027.30 is: 315,040.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,615.20 : 353,422.80 = 210,027.30 : x
  2. Step 2: Convert to fraction form
    235,615.20/353,422.80 = 210,027.30/x
  3. Step 3: Cross multiply
    235,615.20x = 353,422.80 × 210,027.30
  4. Step 4: Simplify right side
    235,615.20x = 74,228,436,442.44
  5. Step 5: Solve for x
    x = 74,228,436,442.44/235,615.20
  6. Step 6: Final answer
    x = 315,040.95

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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.