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Finding the Fourth Proportional to 235,047.66, 352,711.58 and 85,299.65

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Solution

The fourth proportional to 235,047.66, 352,711.58 and 85,299.65 is: 128,000.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,047.66 : 352,711.58 = 85,299.65 : x
  2. Step 2: Convert to fraction form
    235,047.66/352,711.58 = 85,299.65/x
  3. Step 3: Cross multiply
    235,047.66x = 352,711.58 × 85,299.65
  4. Step 4: Simplify right side
    235,047.66x = 30,086,173,937.37
  5. Step 5: Solve for x
    x = 30,086,173,937.37/235,047.66
  6. Step 6: Final answer
    x = 128,000.31

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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.