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Finding the Fourth Proportional to 235,201.91, 352,782.05 and 85,443.48

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Solution

The fourth proportional to 235,201.91, 352,782.05 and 85,443.48 is: 128,157.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,201.91 : 352,782.05 = 85,443.48 : x
  2. Step 2: Convert to fraction form
    235,201.91/352,782.05 = 85,443.48/x
  3. Step 3: Cross multiply
    235,201.91x = 352,782.05 × 85,443.48
  4. Step 4: Simplify right side
    235,201.91x = 30,142,925,606.32
  5. Step 5: Solve for x
    x = 30,142,925,606.32/235,201.91
  6. Step 6: Final answer
    x = 128,157.66

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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.