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Finding the Fourth Proportional to 423,511.80, 634,230.90 and 201,636.60

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Solution

The fourth proportional to 423,511.80, 634,230.90 and 201,636.60 is: 301,961.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,511.80 : 634,230.90 = 201,636.60 : x
  2. Step 2: Convert to fraction form
    423,511.80/634,230.90 = 201,636.60/x
  3. Step 3: Cross multiply
    423,511.80x = 634,230.90 × 201,636.60
  4. Step 4: Simplify right side
    423,511.80x = 127,884,162,290.94
  5. Step 5: Solve for x
    x = 127,884,162,290.94/423,511.80
  6. Step 6: Final answer
    x = 301,961.27

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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.