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Finding the Fourth Proportional to 235,387.80, 352,970.46 and 85,523.58

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Solution

The fourth proportional to 235,387.80, 352,970.46 and 85,523.58 is: 128,244.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,387.80 : 352,970.46 = 85,523.58 : x
  2. Step 2: Convert to fraction form
    235,387.80/352,970.46 = 85,523.58/x
  3. Step 3: Cross multiply
    235,387.80x = 352,970.46 × 85,523.58
  4. Step 4: Simplify right side
    235,387.80x = 30,187,297,373.45
  5. Step 5: Solve for x
    x = 30,187,297,373.45/235,387.80
  6. Step 6: Final answer
    x = 128,244.95

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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.