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Finding the Fourth Proportional to 218,511.87, 301,631.02 and 170,780.60

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Solution

The fourth proportional to 218,511.87, 301,631.02 and 170,780.60 is: 235,743.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,511.87 : 301,631.02 = 170,780.60 : x
  2. Step 2: Convert to fraction form
    218,511.87/301,631.02 = 170,780.60/x
  3. Step 3: Cross multiply
    218,511.87x = 301,631.02 × 170,780.60
  4. Step 4: Simplify right side
    218,511.87x = 51,512,724,639.11
  5. Step 5: Solve for x
    x = 51,512,724,639.11/218,511.87
  6. Step 6: Final answer
    x = 235,743.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.