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Finding the Fourth Proportional to 201,967.40, 302,805.30 and 131,886.20

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Solution

The fourth proportional to 201,967.40, 302,805.30 and 131,886.20 is: 197,734.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,967.40 : 302,805.30 = 131,886.20 : x
  2. Step 2: Convert to fraction form
    201,967.40/302,805.30 = 131,886.20/x
  3. Step 3: Cross multiply
    201,967.40x = 302,805.30 × 131,886.20
  4. Step 4: Simplify right side
    201,967.40x = 39,935,840,356.86
  5. Step 5: Solve for x
    x = 39,935,840,356.86/201,967.40
  6. Step 6: Final answer
    x = 197,734.09

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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.