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Finding the Fourth Proportional to 201,310.80, 301,966.20 and 61,076.40

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Solution

The fourth proportional to 201,310.80, 301,966.20 and 61,076.40 is: 91,614.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,310.80 : 301,966.20 = 61,076.40 : x
  2. Step 2: Convert to fraction form
    201,310.80/301,966.20 = 61,076.40/x
  3. Step 3: Cross multiply
    201,310.80x = 301,966.20 × 61,076.40
  4. Step 4: Simplify right side
    201,310.80x = 18,443,008,417.68
  5. Step 5: Solve for x
    x = 18,443,008,417.68/201,310.80
  6. Step 6: Final answer
    x = 91,614.60

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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.