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Finding the Fourth Proportional to 201,613.70, 302,420.55 and 131,572.10

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Solution

The fourth proportional to 201,613.70, 302,420.55 and 131,572.10 is: 197,358.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,613.70 : 302,420.55 = 131,572.10 : x
  2. Step 2: Convert to fraction form
    201,613.70/302,420.55 = 131,572.10/x
  3. Step 3: Cross multiply
    201,613.70x = 302,420.55 × 131,572.10
  4. Step 4: Simplify right side
    201,613.70x = 39,790,106,846.66
  5. Step 5: Solve for x
    x = 39,790,106,846.66/201,613.70
  6. Step 6: Final answer
    x = 197,358.15

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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.