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Finding the Fourth Proportional to 201,511.60, 301,921.80 and 131,354.80

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Solution

The fourth proportional to 201,511.60, 301,921.80 and 131,354.80 is: 196,806.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,511.60 : 301,921.80 = 131,354.80 : x
  2. Step 2: Convert to fraction form
    201,511.60/301,921.80 = 131,354.80/x
  3. Step 3: Cross multiply
    201,511.60x = 301,921.80 × 131,354.80
  4. Step 4: Simplify right side
    201,511.60x = 39,658,877,654.64
  5. Step 5: Solve for x
    x = 39,658,877,654.64/201,511.60
  6. Step 6: Final answer
    x = 196,806.92

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1.5x scale

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.