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Finding the Fourth Proportional to 201,425.60, 302,357.10 and 126,630.20

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Solution

The fourth proportional to 201,425.60, 302,357.10 and 126,630.20 is: 190,082.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,425.60 : 302,357.10 = 126,630.20 : x
  2. Step 2: Convert to fraction form
    201,425.60/302,357.10 = 126,630.20/x
  3. Step 3: Cross multiply
    201,425.60x = 302,357.10 × 126,630.20
  4. Step 4: Simplify right side
    201,425.60x = 38,287,540,044.42
  5. Step 5: Solve for x
    x = 38,287,540,044.42/201,425.60
  6. Step 6: Final answer
    x = 190,082.79

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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.