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Finding the Fourth Proportional to 201,310.80, 302,549.40 and 197,811.60

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Solution

The fourth proportional to 201,310.80, 302,549.40 and 197,811.60 is: 297,290.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,310.80 : 302,549.40 = 197,811.60 : x
  2. Step 2: Convert to fraction form
    201,310.80/302,549.40 = 197,811.60/x
  3. Step 3: Cross multiply
    201,310.80x = 302,549.40 × 197,811.60
  4. Step 4: Simplify right side
    201,310.80x = 59,847,780,893.04
  5. Step 5: Solve for x
    x = 59,847,780,893.04/201,310.80
  6. Step 6: Final answer
    x = 297,290.46

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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.