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Finding the Fourth Proportional to 201,820.20, 302,730.30 and 192,143.40

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Solution

The fourth proportional to 201,820.20, 302,730.30 and 192,143.40 is: 288,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,820.20 : 302,730.30 = 192,143.40 : x
  2. Step 2: Convert to fraction form
    201,820.20/302,730.30 = 192,143.40/x
  3. Step 3: Cross multiply
    201,820.20x = 302,730.30 × 192,143.40
  4. Step 4: Simplify right side
    201,820.20x = 58,167,629,125.02
  5. Step 5: Solve for x
    x = 58,167,629,125.02/201,820.20
  6. Step 6: Final answer
    x = 288,215.10

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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.