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Finding the Fourth Proportional to 235,200.41, 352,779.80 and 85,441.98

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Solution

The fourth proportional to 235,200.41, 352,779.80 and 85,441.98 is: 128,155.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,200.41 : 352,779.80 = 85,441.98 : x
  2. Step 2: Convert to fraction form
    235,200.41/352,779.80 = 85,441.98/x
  3. Step 3: Cross multiply
    235,200.41x = 352,779.80 × 85,441.98
  4. Step 4: Simplify right side
    235,200.41x = 30,142,204,188.79
  5. Step 5: Solve for x
    x = 30,142,204,188.79/235,200.41
  6. Step 6: Final answer
    x = 128,155.41

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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.